refactor(bazel): Remove schematics and builder from package.json (#37190)

This commit removes the fields for ng-add, schematics and builder from
package.json of `@angular/bazel`.

PR Close #37190

packages/bazel/package.json

@@ -50,15 +50,10 @@
     "url": "https://github.com/angular/angular.git",
     "directory": "packages/bazel"
   },
-  "builders": "./src/builders/builders.json",
-  "schematics": "./src/schematics/collection.json",
-  "ng-add": {
-    "save": "devDependencies"
-  },
   "ng-update": {
     "packageGroup": "NG_UPDATE_PACKAGE_GROUP"
   },
   "publishConfig": {
     "registry": "https://wombat-dressing-room.appspot.com"
   }
-}
+}