Remove '@theia/cpp' extension

Fixes #6340

- removes the `@theia/cpp` extension.
- removes references to the `@theia/cpp` extension.

Signed-off-by: vince-fugnitto <vincent.fugnitto@ericsson.com>

.travis.yml

@@ -20,7 +20,6 @@ cache:
   - packages/callhierarchy/node_modules
   - packages/console/node_modules
   - packages/core/node_modules
-  - packages/cpp/node_modules
   - packages/debug-nodejs/node_modules
   - packages/debug/node_modules
   - packages/editor-preview/node_modules
@@ -130,7 +129,7 @@ jobs:
     script:
       - travis_retry yarn test:theia
   - os: windows
-    env: 
+    env:
     - CXX=c++
     - YARN_GPG=no
     before_script: skip

.vscode/settings.json

@@ -13,7 +13,6 @@
   },
   "lcov.path": [
     "packages/core/coverage/lcov.info",
-    "packages/cpp/coverage/lcov.info",
     "packages/editor/coverage/lcov.info",
     "packages/filesystem/coverage/lcov.info",
     "packages/extension-manager/coverage/lcov.info",

examples/browser/package.json

@@ -17,7 +17,6 @@
     "@theia/callhierarchy": "^0.12.0",
     "@theia/console": "^0.12.0",
     "@theia/core": "^0.12.0",
-    "@theia/cpp": "^0.12.0",
     "@theia/debug": "^0.12.0",
     "@theia/debug-nodejs": "^0.12.0",
     "@theia/editor": "^0.12.0",

examples/electron/package.json

@@ -15,7 +15,6 @@
     "@theia/callhierarchy": "^0.12.0",
     "@theia/console": "^0.12.0",
     "@theia/core": "^0.12.0",
-    "@theia/cpp": "^0.12.0",
     "@theia/debug": "^0.12.0",
     "@theia/debug-nodejs": "^0.12.0",
     "@theia/editor": "^0.12.0",