eslint: report unused disable directives (#13463)

Remove any unused disable directives and FIXMEs in our code

libs/common/src/auth/models/request/identity-token/token.request.ts

@@ -14,7 +14,6 @@ export abstract class TokenRequest {
     this.device = device != null ? device : null;
   }
 
-  // eslint-disable-next-line
   alterIdentityTokenHeaders(headers: Headers) {
     // Implemented in subclass if required
   }

libs/common/src/state-migrations/migration-helper.spec.ts

@@ -1,6 +1,5 @@
 import { MockProxy, mock } from "jest-mock-extended";
 
-// eslint-disable-next-line import/no-restricted-paths -- Needed to print log messages
 import { FakeStorageService } from "../../spec/fake-storage.service";
 // eslint-disable-next-line import/no-restricted-paths -- Needed client type enum
 import { ClientType } from "../enums";