Remove hack as PR fix: facebook/react-native#28332 is release with 0.…

…62.2

test/native/setup.js

@@ -1,7 +1,7 @@
 /**
  * External dependencies
  */
-import { NativeModules, TextInput } from 'react-native';
+import { NativeModules } from 'react-native';
 
 jest.mock( 'react-native-gutenberg-bridge', () => {
 	return {
@@ -105,7 +105,3 @@ Object.keys( mockNativeModules ).forEach( ( module ) => {
 		} );
 	}
 } );
-
-// Hack to add the isFocused method to the mock of TextInput provided by RN implementation
-// This should be remove if and when this PR is merged on React-Native repo: https://github.com/facebook/react-native/pull/28332
-Object.assign( TextInput.prototype, { isFocused: jest.fn() } );