Delete some unnecessary noise

src/routers/__tests__/StackRouter-test.js

@@ -1,4 +1,3 @@
-/*       */
 /* eslint no-shadow:0, react/no-multi-comp:0, react/display-name:0 */
 
 import React from 'react';

src/routers/__tests__/TabRouter-test.js

@@ -1,4 +1,3 @@
-/*       */
 /* eslint react/display-name:0 */
 
 import React from 'react';

src/routers/__tests__/createConfigGetter-test.js

@@ -1,5 +1,3 @@
-/*       */
-
 import { Component } from 'react';
 import createConfigGetter from '../createConfigGetter';
 import addNavigationHelpers from '../../addNavigationHelpers';

src/routers/__tests__/validateRouteConfigMap-test.js

@@ -1,9 +1,6 @@
-/*       */
-
 import React from 'react';
 
 import validateRouteConfigMap from '../validateRouteConfigMap';
-
 import StackRouter from '../StackRouter';
 
 const ListScreen = () => <div />;