Revert "feat(@angular/cli): Add VsCode extension recommendations"

This reverts commit d9166b0.

Author: alexeagle

packages/schematics/angular/migrations/migration-collection.json

@@ -29,11 +29,6 @@
       "version": "7.0.3",
       "factory": "./update-7/index#updateDevkitBuildNgPackagr",
       "description": "Update an Angular CLI project to version 7."
-    },
-    "migration-07": {
-      "version": "8.0.0",
-      "factory": "./update-vscode-recommendations/update-8.0.0",
-      "description": "Update an Angular CLI project to version 8.0.0"
     }
   }
 }