Revert edge glow effect and restore damped overscroll

Bug 62628421

Change-Id: Iab6ac567e98e63ade34de8817c3ae1f58c25ba19

src/com/android/launcher3/folder/FolderPagedView.java

@@ -701,10 +701,4 @@ public class FolderPagedView extends PagedView {
     public int itemsPerPage() {
         return mMaxItemsPerPage;
     }
-
-    @Override
-    protected void getEdgeVerticalPosition(int[] pos) {
-        pos[0] = 0;
-        pos[1] = getViewportHeight();
-    }
 }