Refactor the app updates so that it doesn't rely on the package name.

This will be needed for the upcoming change to update the icons with the
grayed out when the SD card goes away.
diff --git a/src/com/android/launcher2/AllApps3D.java b/src/com/android/launcher2/AllApps3D.java
index f571eff..c329b6c 100644
--- a/src/com/android/launcher2/AllApps3D.java
+++ b/src/com/android/launcher2/AllApps3D.java
@@ -772,7 +772,7 @@
         }
     }
     
-    public void updateApps(String packageName, ArrayList<ApplicationInfo> list) {
+    public void updateApps(ArrayList<ApplicationInfo> list) {
         // Just remove and add, because they may need to be re-sorted.
         removeApps(list);
         addApps(list);