remove sync test code from test app

tests/react-test-app/index.ios.js

@@ -30,34 +30,6 @@ import { runTests } from './tests';
 
 const Realm = require('realm');
 
-Realm.Sync.setLogLevel('error');
-var realm;
-Realm.Sync.User.register('http://127.0.0.1:9080/', 'ari', 'aaa', function(error, user) {
-    console.log(user);
-
-    realm = new Realm({
-        sync: {
-            user: user, 
-            url: 'realm://127.0.0.1:9080/~/demo/realm1'
-        }, 
-        schema: [{
-            name: 'IntObject',
-            properties: {
-                int: 'int'
-            }
-        }]
-    });
-
-    realm.addListener('change', () => {
-        console.log(realm.objects('IntObject'));
-    });
-
-    realm.write(() => {
-        realm.create('IntObject', {int: realm.objects('IntObject').length});
-    });
-});
-
-
 class ReactTests extends React.Component {
     render() {
         return (