Removed old rules from eslint

Tried hand at testing by fixing the spec files with import. However, still many errors and given up now.

overlord/src/app/payment/payment-accounts-resolver.service.spec.ts

@@ -1,11 +1,13 @@
 import { inject, TestBed } from '@angular/core/testing';
+import { HttpClientModule } from '@angular/common/http';
 
 import { PaymentAccountsResolver } from './payment-accounts-resolver.service';
 
 describe('PaymentAccountsResolver', () => {
   beforeEach(() => {
     TestBed.configureTestingModule({
-      providers: [PaymentAccountsResolverService],
+      imports: [HttpClientModule],
+      providers: [PaymentAccountsResolver],
     });
   });