refactor(various): remove a few lingering but unused deprecated apis (#10896)

Removes deprecated APPLICATION_COMMON_PROVIDERS, as well as some
internal apis that were deprecated.

modules/@angular/platform-browser/src/dom/dom_adapter.ts

@@ -45,9 +45,6 @@ export abstract class DomAdapter {
   abstract logGroup(error: any /** TODO #9100 */): any /** TODO #9100 */;
   abstract logGroupEnd(): any /** TODO #9100 */;
 
-  /** @deprecated */
-  getResourceLoader(): Type<any> { return this.resourceLoaderType; }
-
   /**
    * Maps attribute names to their corresponding property names for cases
    * where attribute name doesn't match property name.

modules/@angular/platform-browser/src/web_workers/worker/worker_adapter.ts

@@ -50,8 +50,6 @@ export class WorkerDomAdapter extends DomAdapter {
   getProperty(el: Element, name: string): any { throw 'not implemented'; }
   invoke(el: Element, methodName: string, args: any[]): any { throw 'not implemented'; }
 
-  getResourceLoader(): Type<any> { throw 'not implemented'; }
-
   get attrToPropMap(): {[key: string]: string} { throw 'not implemented'; }
   set attrToPropMap(value: {[key: string]: string}) { throw 'not implemented'; }