diff --git a/api/HTMLButtonElement.json b/api/HTMLButtonElement.json
index 3aec5cad03a783..97b7ce31e6b2ad 100644
--- a/api/HTMLButtonElement.json
+++ b/api/HTMLButtonElement.json
@@ -529,54 +529,6 @@
           }
         }
       },
-      "menu": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/menu",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "name": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/name",
diff --git a/api/HTMLIFrameElement.json b/api/HTMLIFrameElement.json
index b62298caa9d9f1..06c6ecb237ee62 100644
--- a/api/HTMLIFrameElement.json
+++ b/api/HTMLIFrameElement.json
@@ -1012,55 +1012,6 @@
           }
         }
       },
-      "setNfcFocus": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/setNfcFocus",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false,
-              "notes": "Supported in chrome code only since Firefox version 47."
-            },
-            "firefox_android": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": false
-          }
-        }
-      },
       "src": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/src",
diff --git a/api/HTMLIsIndexElement.json b/api/HTMLIsIndexElement.json
deleted file mode 100644
index ccea22a0c0f6a4..00000000000000
--- a/api/HTMLIsIndexElement.json
+++ /dev/null
@@ -1,148 +0,0 @@
-{
-  "api": {
-    "HTMLIsIndexElement": {
-      "__compat": {
-        "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIsIndexElement",
-        "support": {
-          "chrome": {
-            "version_added": false
-          },
-          "chrome_android": {
-            "version_added": false
-          },
-          "edge": {
-            "version_added": false
-          },
-          "firefox": {
-            "version_added": false
-          },
-          "firefox_android": {
-            "version_added": false
-          },
-          "ie": {
-            "version_added": false
-          },
-          "opera": {
-            "version_added": false
-          },
-          "opera_android": {
-            "version_added": false
-          },
-          "safari": {
-            "version_added": false
-          },
-          "safari_ios": {
-            "version_added": false
-          },
-          "samsunginternet_android": {
-            "version_added": false
-          },
-          "webview_android": {
-            "version_added": false
-          }
-        },
-        "status": {
-          "experimental": false,
-          "standard_track": false,
-          "deprecated": true
-        }
-      },
-      "form": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIsIndexElement/form",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": true
-          }
-        }
-      },
-      "prompt": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIsIndexElement/prompt",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": true
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/api/HTMLMenuItemElement.json b/api/HTMLMenuItemElement.json
index 120c94c4cc833e..68e553d7e25d16 100644
--- a/api/HTMLMenuItemElement.json
+++ b/api/HTMLMenuItemElement.json
@@ -95,54 +95,6 @@
           }
         }
       },
-      "command": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMenuItemElement/command",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": true
-          }
-        }
-      },
       "default": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMenuItemElement/default",
diff --git a/api/HTMLTableElement.json b/api/HTMLTableElement.json
index 6fd0dca3f8108f..73d31c0dc68eec 100644
--- a/api/HTMLTableElement.json
+++ b/api/HTMLTableElement.json
@@ -913,90 +913,6 @@
           }
         }
       },
-      "sortable": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/sortable",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "stopSorting": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/stopSorting",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "summary": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/summary",