remove normalized models part 1

src/app/core/shared/hal-resource.model.ts

@@ -1,11 +1,6 @@
 import { HALLink } from './hal-link.model';
 
 export class HALResource {
-
-  get self(): string {
-    return this._links.self.href;
-  }
-
   _links: {
     self: HALLink
     [k: string]: HALLink;