Fix deadlock in dispatcher. (DO NOT MERGE)

This regression was caused due to a bad cherry-pick / merge.

Change-Id: I79e84285bbfd4cd4b66681461543fb185b60d3ba
diff --git a/services/input/InputDispatcher.cpp b/services/input/InputDispatcher.cpp
index d9ef819..9a77af3 100644
--- a/services/input/InputDispatcher.cpp
+++ b/services/input/InputDispatcher.cpp
@@ -2432,7 +2432,6 @@
                     // Do the batching magic.
                     batchMotionLocked(motionEntry, eventTime, metaState, pointerCoords,
                             "pending motion event");
-                    mLock.unlock();
                     return; // done!
                 }
             }