These apis have been deprecated in v8, so they should stick around till v10,
but since they are defunct we are removing them early so that they don't take up payload size.
PR Close#33949
This is needed as:
- closure declares globals itself for minified names, which sometimes clobber our `ng` global
- we can't declare a closure extern as the namespace `ng` is already used within Google for typings for angularJS (via `goog.provide('ng....')`).
