Back out "[react-native][PR] [Android] Implement fading edges for ScrollView and it's dependent FlatList"

Summary:
After some thought, we decided we don't need the flexibility of
separate horizontal and vertical props - it would be much nicer
to just have a single prop for the edge length and then the native
code can enable the booleans as appropriate.

Original PR: https://github.com/facebook/react-native/pull/26163

Original commit changeset: f72a9a890d90

Reviewed By: TheSavior

Differential Revision: D16997468

fbshipit-source-id: 7973262287a7ec2cee5957f8dc1806a0f28c1432

ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollViewManager.java

@@ -276,14 +276,4 @@ public class ReactHorizontalScrollViewManager extends ViewGroupManager<ReactHori
   public void setPersistentScrollbar(ReactHorizontalScrollView view, boolean value) {
     view.setScrollbarFadingEnabled(!value);
   }
-
-  @ReactProp(name = "horizontalFadingEdgesEnabled")
-  public void setHorizontalFadingEdgesEnabled(ReactHorizontalScrollView view, boolean value) {
-    view.setHorizontalFadingEdgeEnabled(value);
-  }
-
-  @ReactProp(name = "fadingEdgeLength")
-  public void setFadingEdgeLength(ReactHorizontalScrollView view, int value) {
-    view.setFadingEdgeLength(value);
-  }
 }

ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewManager.java

@@ -278,16 +278,6 @@ public class ReactScrollViewManager extends ViewGroupManager<ReactScrollView>
     view.setScrollbarFadingEnabled(!value);
   }
 
-  @ReactProp(name = "verticalFadingEdgesEnabled")
-  public void setVerticalFadingEdgesEnabled(ReactScrollView view, boolean value) {
-    view.setVerticalFadingEdgeEnabled(value);
-  }
-
-  @ReactProp(name = "fadingEdgeLength")
-  public void setFadingEdgeLength(ReactScrollView view, int value) {
-    view.setFadingEdgeLength(value);
-  }
-
   @Override
   public @Nullable Map<String, Object> getExportedCustomDirectEventTypeConstants() {
     return createExportedCustomDirectEventTypeConstants();