Remove deprecated PullToRefreshViewAndroid and onRefreshStart / endRefreshing

Summary:
Removes the deprecated APIs that were replaced by `RefreshControl`. Those API have been deprecated for a while already so I think it's fine to remove them at this point. Also ported the `SwipeRefreshLayoutTestModule` test to use `RefreshControl` instead of `PullToRefreshViewAndroid`.

**Test plan (required)**

Made sure no references are left in the codebase to `PullToRefreshViewAndroid`, `onRefreshStart` and `endRefreshing`.
Tested that `ScrollView` examples in UIExplorer still work properly.
Check that the `SwipeRefreshLayoutTestModule` passes on CI.
Closes https://github.com/facebook/react-native/pull/7447

Reviewed By: mkonicek

Differential Revision: D3292391

Pulled By: bestander

fbshipit-source-id: 27eb2443861e04a9f7319586ce2ada381b714d47

Libraries/Components/ScrollView/ScrollView.js

@@ -24,7 +24,6 @@ const StyleSheetPropType = require('StyleSheetPropType');
 const View = require('View');
 const ViewStylePropTypes = require('ViewStylePropTypes');
 
-const deprecatedPropType = require('deprecatedPropType');
 const dismissKeyboard = require('dismissKeyboard');
 const flattenStyle = require('flattenStyle');
 const invariant = require('fbjs/lib/invariant');
@@ -311,14 +310,6 @@ const ScrollView = React.createClass({
      */
     refreshControl: PropTypes.element,
 
-    /**
-     * @platform ios
-     */
-    onRefreshStart: deprecatedPropType(
-      PropTypes.func,
-      'Use the `refreshControl` prop instead.'
-    ),
-
     /**
      * Sometimes a scrollview takes up more space than its content fills. When this is
      * the case, this prop will fill the rest of the scrollview with a color to avoid setting
@@ -348,15 +339,6 @@ const ScrollView = React.createClass({
     this._scrollViewRef && this._scrollViewRef.setNativeProps(props);
   },
 
-  /**
-   * Deprecated. Use `RefreshControl` instead.
-   */
-  endRefreshing: function() {
-    RCTScrollViewManager.endRefreshing(
-      ReactNative.findNodeHandle(this)
-    );
-  },
-
   /**
    * Returns a reference to the underlying scroll responder, which supports
    * operations like `scrollTo`. All ScrollView-like components should
@@ -510,14 +492,6 @@ const ScrollView = React.createClass({
       sendMomentumEvents: (this.props.onMomentumScrollBegin || this.props.onMomentumScrollEnd) ? true : false,
     };
 
-    const onRefreshStart = this.props.onRefreshStart;
-    if (onRefreshStart) {
-      // this is necessary because if we set it on props, even when empty,
-      // it'll trigger the default pull-to-refresh behavior on native.
-      props.onRefreshStart =
-        function() { onRefreshStart && onRefreshStart(this.endRefreshing); }.bind(this);
-    }
-
     const { decelerationRate } = this.props;
     if (decelerationRate) {
       props.decelerationRate = processDecelerationRate(decelerationRate);