Fix the recent call list flicker

Change-Id: I277ef95c9d3da9ee46b3e51ee61388d717ac86eb
diff --git a/src/com/android/contacts/RecentCallsListActivity.java b/src/com/android/contacts/RecentCallsListActivity.java
index a195971..67e402d 100644
--- a/src/com/android/contacts/RecentCallsListActivity.java
+++ b/src/com/android/contacts/RecentCallsListActivity.java
@@ -752,12 +752,6 @@
 
         // Kill the requests thread
         mAdapter.stopRequestProcessing();
-    }
-
-    @Override
-    protected void onDestroy() {
-        super.onDestroy();
-        mAdapter.stopRequestProcessing();
         mAdapter.changeCursor(null);
     }