remove unnecessary line

packages/app/src/components/PageEditor/CodeMirrorEditor.jsx

@@ -19,7 +19,6 @@ import { UncontrolledCodeMirror } from '../UncontrolledCodeMirror';
 
 import AbstractEditor from './AbstractEditor';
 import CommentMentionHelper from './CommentMentionHelper';
-import { DrawioModal } from './DrawioModal';
 import EditorIcon from './EditorIcon';
 import EmojiPicker from './EmojiPicker';
 import EmojiPickerHelper from './EmojiPickerHelper';