CHORE - Remove Trailing Spaces

Summary:Remove Trailing Spaces.

Why:
Sometimes there are conflicts with trailing spaces
Saves space
Those whose tools automatically delete them will have their pr watered down with trailing space removal
Closes https://github.com/facebook/react-native/pull/6787

Differential Revision: D3144704

fb-gh-sync-id: d8a62f115a3f8a8a49d5b07f56c540a02af38cf8
fbshipit-source-id: d8a62f115a3f8a8a49d5b07f56c540a02af38cf8

Examples/UIExplorer/DatePickerAndroidExample.js

@@ -46,7 +46,7 @@ var DatePickerAndroidExample = React.createClass({
   async showPicker(stateKey, options) {
     try {
       var newState = {};
-      const {action, year, month, day} = await DatePickerAndroid.open(options);      
+      const {action, year, month, day} = await DatePickerAndroid.open(options);
       if (action === DatePickerAndroid.dismissedAction) {
         newState[stateKey + 'Text'] = 'dismissed';
       } else {