Fix linter :(

app/soapbox/components/sidebar_menu.js

@@ -15,7 +15,6 @@ import { shortNumberFormat } from '../utils/numbers';
 import { isStaff } from '../utils/accounts';
 import { makeGetAccount } from '../selectors';
 import { logOut } from 'soapbox/actions/auth';
-import { Map as ImmutableMap } from 'immutable';
 
 const messages = defineMessages({
   followers: { id: 'account.followers', defaultMessage: 'Followers' },