Move TouchHistoryMath to React Native repo (facebook#12557)

This isn't used by React core and is just a pure helper so it might as
well live where it's used. The React Native repo.

Author: sebmarkbage

packages/events/TouchHistoryMath.js

@@ -14,7 +14,6 @@ import './ReactFabricInjection';
 
 import * as ReactPortal from 'shared/ReactPortal';
 import * as ReactGenericBatching from 'events/ReactGenericBatching';
-import TouchHistoryMath from 'events/TouchHistoryMath';
 import ReactVersion from 'shared/ReactVersion';
 
 import NativeMethodsMixin from './NativeMethodsMixin';
@@ -87,7 +86,6 @@ const ReactFabric: ReactNativeType = {
     ReactNativeBridgeEventPlugin, // requireNativeComponent
     ReactNativeComponentTree, // ScrollResponder
     ReactNativePropRegistry, // flattenStyle, Stylesheet
-    TouchHistoryMath, // PanResponder
     createReactNativeComponentClass, // RCTText, RCTView, ReactNativeART
     takeSnapshot, // react-native-implementation
   },

packages/react-native-renderer/src/ReactFabric.js

@@ -14,7 +14,6 @@ import './ReactNativeInjection';
 
 import * as ReactPortal from 'shared/ReactPortal';
 import * as ReactGenericBatching from 'events/ReactGenericBatching';
-import TouchHistoryMath from 'events/TouchHistoryMath';
 import ReactVersion from 'shared/ReactVersion';
 // Module provided by RN:
 import UIManager from 'UIManager';
@@ -106,7 +105,6 @@ const ReactNativeRenderer: ReactNativeType = {
     ReactNativeBridgeEventPlugin, // requireNativeComponent
     ReactNativeComponentTree, // ScrollResponder
     ReactNativePropRegistry, // flattenStyle, Stylesheet
-    TouchHistoryMath, // PanResponder
     createReactNativeComponentClass, // RCTText, RCTView, ReactNativeART
     takeSnapshot, // react-native-implementation
     computeComponentStackForErrorReporting,