Delete common-test-setup-karma.ts

All it's workarounds have been unnecessary and removed.

Release-Notes: skip
Change-Id: I39cb711151555f735a5014f36941ebd886c21a2d
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils_test.ts b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils_test.ts
index 5cdf365..9646bcd 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils_test.ts
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils_test.ts
@@ -3,7 +3,7 @@
  * Copyright 2019 Google LLC
  * SPDX-License-Identifier: Apache-2.0
  */
-import '../../../test/common-test-setup-karma';
+import '../../../test/common-test-setup';
 import './gr-js-api-interface';
 import {getPluginNameFromUrl} from './gr-api-utils';
 import {assert} from '@open-wc/testing';