Remove unused imports

packages/nimble-components/src/rich-text/editor/models/create-tiptap-editor.ts

@@ -4,13 +4,11 @@ import BulletList from '@tiptap/extension-bullet-list';
 import Document from '@tiptap/extension-document';
 import History from '@tiptap/extension-history';
 import Italic from '@tiptap/extension-italic';
-import Link, { LinkOptions } from '@tiptap/extension-link';
 import ListItem from '@tiptap/extension-list-item';
 import OrderedList from '@tiptap/extension-ordered-list';
 import Paragraph from '@tiptap/extension-paragraph';
 import Placeholder from '@tiptap/extension-placeholder';
 import Text from '@tiptap/extension-text';
-import Mention, { MentionOptions } from '@tiptap/extension-mention';
 import HardBreak from '@tiptap/extension-hard-break';
 import { Slice, Fragment, Node as FragmentNode } from 'prosemirror-model';
 import { PluginKey } from 'prosemirror-state';