cleanup

src/docregistry/default.ts

@@ -7,7 +7,7 @@ import * as CodeMirror
 import 'codemirror/mode/meta';
 
 import {
-  Contents, Kernel
+  Contents
 } from '@jupyterlab/services';
 
 import {

src/renderers/widget.ts

@@ -1,7 +1,6 @@
 // Copyright (c) Jupyter Development Team.
 // Distributed under the terms of the Modified BSD License.
 
-
 import {
   ansi_to_html, escape_for_html
 } from 'ansi_up';