Revert "Make RecyclerView requestDisallowInterceptTouchEvent(true)"

This reverts commit 699c56c4cb08cc04cca8b1341a78a4b6084ae9ef.

Seems that the original ommission was intentional. See
Ifa2177e30dcdccc4832e78a78c86dea756f06884.

BUG: 24374039
Change-Id: I5b480fbb8ada6b5ac093b3fcd4b69117d6dcc27d
diff --git a/v7/recyclerview/src/android/support/v7/widget/RecyclerView.java b/v7/recyclerview/src/android/support/v7/widget/RecyclerView.java
index ee4278f..24067e1 100644
--- a/v7/recyclerview/src/android/support/v7/widget/RecyclerView.java
+++ b/v7/recyclerview/src/android/support/v7/widget/RecyclerView.java
@@ -2228,10 +2228,6 @@
                         startScroll = true;
                     }
                     if (startScroll) {
-                        final ViewParent parent = getParent();
-                        if (parent != null) {
-                            parent.requestDisallowInterceptTouchEvent(true);
-                        }
                         setScrollState(SCROLL_STATE_DRAGGING);
                     }
                 }
@@ -2357,10 +2353,6 @@
                         startScroll = true;
                     }
                     if (startScroll) {
-                        final ViewParent parent = getParent();
-                        if (parent != null) {
-                            parent.requestDisallowInterceptTouchEvent(true);
-                        }
                         setScrollState(SCROLL_STATE_DRAGGING);
                     }
                 }