Reverted commit D3401811

Summary:
Currently on iOS animations are being performed on the JS thread. This ports animations over to the native thread and performs them natively. A lot of this work has already been done on Android, but this PR enables a few animation nodes that Android doesn't yet support such as Transform, Multiplication, and Addition nodes.
Also there is a demo of the native animations added to the UIExplorer app.
Closes https://github.com/facebook/react-native/pull/7884

Differential Revision: D3401811

Pulled By: nicklockwood

fbshipit-source-id: 709e533243130153febef03ddd60d39e9fe70e3e

Libraries/NativeAnimation/Nodes/RCTAnimationDriverNode.h

@@ -1,40 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#import <CoreGraphics/CoreGraphics.h>
-#import "RCTBridgeModule.h"
-
-@class RCTValueAnimatedNode;
-
-NS_ASSUME_NONNULL_BEGIN
-
-@interface RCTAnimationDriverNode : NSObject
-
-@property (nonatomic, readonly) NSNumber *animationId;
-@property (nonatomic, readonly) NSNumber *outputValue;
-
-@property (nonatomic, readonly) BOOL animationHasBegun;
-@property (nonatomic, readonly) BOOL animationHasFinished;
-
-- (instancetype)initWithId:(NSNumber *)animationId
-                     delay:(NSTimeInterval)delay
-                   toValue:(CGFloat)toValue
-                    frames:(NSArray<NSNumber *> *)frames
-                  forNode:(RCTValueAnimatedNode *)valueNode
-                  callBack:(nullable RCTResponseSenderBlock)callback NS_DESIGNATED_INITIALIZER;
-
-- (void)startAnimation;
-- (void)stopAnimation;
-- (void)stepAnimation;
-- (void)removeAnimation;
-- (void)cleanupAnimationUpdate;
-
-@end
-
-NS_ASSUME_NONNULL_END