message: Remove unnecessary `groupSiblings`
diff: @@ -3,7 +3,6 @@ import select from 'select-dom';
  import delegate from 'delegate-it';
  import copyToClipboard from 'copy-text-to-clipboard';
  import features from '../libs/features';
  -import {groupSiblings} from '../libs/group-buttons';
  function handleClick({currentTarget: button}: React.MouseEvent<HTMLButtonElement>): void {
  const file = button.closest('.Box, .js-gist-file-update-container');
  @@ -33,7 +32,6 @@ function renderButton(): void {
  Copy
  </button>
  );
  - groupSiblings(button);
  }
  }
  