RN: Delete Animated/polyfills

Summary:
Deletes `Animated/polyfills` which is no longer necessary (and only creates extra configuration burden).

Changelog:
[Internal]

Reviewed By: cpojer

Differential Revision: D22451963

fbshipit-source-id: 7a9a48b96b3783f2f6340226bdafd2eaa43f32e7

Libraries/Animated/polyfills/InteractionManager.js

@@ -1,15 +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
- */
-
-'use strict';
-
-module.exports = {
-  createInteractionHandle: function() {},
-  clearInteractionHandle: function() {},
-};

Libraries/Animated/polyfills/Set.js

@@ -1,26 +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
- */
-
-'use strict';
-
-function SetPolyfill() {
-  this._cache = [];
-}
-
-SetPolyfill.prototype.add = function(e) {
-  if (this._cache.indexOf(e) === -1) {
-    this._cache.push(e);
-  }
-};
-
-SetPolyfill.prototype.forEach = function(cb) {
-  this._cache.forEach(cb);
-};
-
-module.exports = SetPolyfill;

Libraries/Animated/polyfills/flattenStyle.js

@@ -1,13 +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
- */
-
-'use strict';
-module.exports = function(style) {
-  return style;
-};