RN: Delete getObjectValues

Summary:
Deletes `getObjectValues` because there are no more references to it in `react-native`.

Changelog:
[Internal]

Reviewed By: TheSavior

Differential Revision: D17884311

fbshipit-source-id: c97caeed00fe94a6cc099fba7039d9defee719dd

Libraries/vendor/core/getObjectValues.js

@@ -1,30 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @typechecks
- */
-
-'use strict';
-
-/**
- * Retrieve an object's values as an array.
- *
- * If you are looking for a function that creates an Array instance based
- * on an "Array-like" object, use createArrayFrom instead.
- *
- * @param {object} obj An object.
- * @return {array}     The object's values.
- */
-function getObjectValues(obj) {
-  const values = [];
-  for (const key in obj) {
-    values.push(obj[key]);
-  }
-  return values;
-}
-
-module.exports = getObjectValues;