Other: Remove env.isEdge. Closes #6202.

Remove some special cases for Edge, as since it's Chromium-based now, it behaves closer to others.

packages/ckeditor5-paste-from-office/tests/data/integration.js

@@ -15,7 +15,6 @@ import Strikethrough from '@ckeditor/ckeditor5-basic-styles/src/strikethrough';
 import List from '@ckeditor/ckeditor5-list/src/list';
 import Image from '@ckeditor/ckeditor5-image/src/image';
 import Table from '@ckeditor/ckeditor5-table/src/table';
-import env from '@ckeditor/ckeditor5-utils/src/env';
 
 import PasteFromOffice from '../../src/pastefromoffice';
 import { generateTests } from '../_utils/utils';
@@ -43,10 +42,10 @@ describe( 'PasteFromOffice - integration', () => {
 			plugins: [ Clipboard, Paragraph, Image, Table, PasteFromOffice ]
 		},
 		skip: {
-			chrome: ( env.isEdge ? [ 'adjacentGroups' ] : [] ),
-			firefox: ( env.isEdge ? [ 'adjacentGroups' ] : [] ),
-			safari: ( env.isEdge ? [ 'adjacentGroups' ] : [] ),
-			edge: ( env.isEdge ? [] : [ 'adjacentGroups' ] )
+			chrome: [],
+			firefox: [],
+			safari: [],
+			edge: [ 'adjacentGroups' ]
 		}
 	} );