refactor(test): Remove unnecessary noSuchMethod

Remove trivial implementations in many spy objects which just calls the
parent's `noSuchMethod`.

Closes #6410

Closes #6491

modules/angular2/test/testing/testing_internal_spec.ts

@@ -24,7 +24,6 @@ class TestObj {
 
 class SpyTestObj extends SpyObject {
   constructor() { super(TestObj); }
-  noSuchMethod(m) { return super.noSuchMethod(m) }
 }