cleanup(linker): Remove vestigial ComponentUrlMapper.

Closes #5849

modules/angular2/src/core/linker/component_url_mapper.ts

@@ -1,45 +0,0 @@
-import {Injectable} from 'angular2/src/core/di';
-import {Type, isPresent} from 'angular2/src/facade/lang';
-import {Map, MapWrapper} from 'angular2/src/facade/collection';
-import {reflector} from 'angular2/src/core/reflection/reflection';
-
-/**
- * Resolve a `Type` from a {@link ComponentMetadata} into a URL.
- *
- * This interface can be overridden by the application developer to create custom behavior.
- *
- * See {@link Compiler}.
- */
-@Injectable()
-export class ComponentUrlMapper {
-  /**
-   * Returns the base URL to the component source file.
-   * The returned URL could be:
-   * - an absolute URL,
-   * - a path relative to the application
-   */
-  getUrl(component: Type): string {
-    return reflector.isReflectionEnabled() ? reflector.importUri(component) : './';
-  }
-}
-
-/**
- * A {@link ComponentUrlMapper} that maintains an internal map of types to URLs.
- */
-export class RuntimeComponentUrlMapper extends ComponentUrlMapper {
-  /** @internal */
-  _componentUrls = new Map<Type, string>();
-
-  constructor() { super(); }
-
-  /**
-   * Add a mapping from component type to url to the resolver.
-   */
-  setComponentUrl(component: Type, url: string) { this._componentUrls.set(component, url); }
-
-  getUrl(component: Type): string {
-    var url = this._componentUrls.get(component);
-    if (isPresent(url)) return url;
-    return super.getUrl(component);
-  }
-}