Testing: Unskip block deletion test

See #15059 (comment)

packages/e2e-tests/specs/block-deletion.test.js

@@ -30,7 +30,7 @@ describe( 'block deletion -', () => {
 	beforeEach( addThreeParagraphsToNewPost );
 
 	describe( 'deleting the third block using the Remove Block menu item', () => {
-		it.skip( 'results in two remaining blocks and positions the caret at the end of the second block', async () => {
+		it( 'results in two remaining blocks and positions the caret at the end of the second block', async () => {
 			// The blocks can't be empty to trigger the toolbar
 			await page.keyboard.type( 'Paragraph to remove' );