Chore: remove the e2e-flow-suite (#75011)

remove the e2e-flow-suite

e2e/e2e-flow-suite/00-panel-menu-extension.spec.ts

@@ -1,16 +0,0 @@
-import { e2e } from '../utils';
-
-describe('Panel menu ui extension flow', () => {
-  beforeEach(() => {
-    e2e.flows.login(e2e.env('USERNAME'), e2e.env('PASSWORD'));
-  });
-
-  it('Should be possible to click extension menu item', () => {
-    const panelTitle = 'Random walk series';
-    const extensionTitle = 'Copy';
-
-    e2e.flows.openDashboard({ uid: '5SdHCasdf' });
-    e2e.flows.openPanelMenuExtension(extensionTitle, panelTitle);
-    e2e.flows.assertSuccessNotification();
-  });
-});