debt - improve emmet integration tests

- properly close all editors
- disable minimap to prevent spammy output

extensions/emmet/src/test/completion.test.ts

@@ -14,7 +14,7 @@ const completionProvider = new DefaultCompletionItemProvider();
 suite('Tests for completion in CSS embedded in HTML', () => {
 	teardown(() => {
 		// close all editors
-		return closeAllEditors;
+		return closeAllEditors();
 	});
 
 	test('style attribute & attribute value in html', async () => {