remove unused js

lighthouse-core/lib/cdt/SDK.js

@@ -54,26 +54,6 @@ function upperBound(object, comparator, left, right) {
   return r;
 }
 
-/**
- * @param {number} line
- * @param {number} column
- */
-SDK.TextSourceMap.prototype.findExactEntry = function(line, column) {
-  // findEntry takes compiled locations and returns original locations.
-  const entry = this.findEntry(line, column);
-  // without an exact hit, we return no match
-  const hitMyBattleShip = entry && entry.lineNumber === line;
-  if (!entry || !hitMyBattleShip) {
-    return {
-      sourceColumnNumber: null,
-      sourceLineNumber: null,
-      name: null,
-      sourceURL: null,
-    };
-  }
-  return entry;
-};
-
 // Add `lastColumnNumber` to mappings.
 SDK.TextSourceMap.prototype.computeLastGeneratedColumns = function() {
   const mappings = this.mappings();