Revert "docs: add comment markers for internal goog.define replacement (#32795)" (#35830)

This reverts commit 32b6c2285e as this is
no longer used.

PR Close #35830

packages/core/src/util/ng_dev_mode.ts

@@ -8,9 +8,6 @@
 
 import {global} from './global';
 
-// Do not remove: needed for closure to be able to properly tree-shake ngDevMode.
-// goog.define
-
 declare global {
   /**
    * Values of ngDevMode

packages/core/src/util/ng_i18n_closure_mode.ts

@@ -8,9 +8,6 @@
 
 import {global} from './global';
 
-// Do not remove: needed for closure to be able to properly tree-shake ngI18nClosureMode.
-// goog.define
-
 declare global {
   const ngI18nClosureMode: boolean;
 }