Fix build.

Change-Id: I6afd45e603fd2480867dc692d59fd489ee2af63d
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index e7aa3d8..af9acb1 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -67,10 +67,6 @@
 
         mStarttime = System.currentTimeMillis();
 
-        if (context.getResources().getBoolean(R.bool.debug_memory_enabled)) {
-            WeightWatcher.sUpdateThread.start();
-        }
-
         // set sIsScreenXLarge and sScreenDensity *before* creating icon cache
         sIsScreenLarge = context.getResources().getBoolean(R.bool.is_large_screen);
         sScreenDensity = context.getResources().getDisplayMetrics().density;