Fix loading widgets in <include>d workspaces.

Resetting the item id was breaking the widget loading code
and is totally unnecessary.

Bug: 11352675
Change-Id: I2e70e542ecc5d8c0664b674ebdac5d520b71b8a0

src/com/android/launcher3/LauncherProvider.java

@@ -1046,7 +1046,6 @@ public class LauncherProvider extends ContentProvider {
                             // recursively load some more favorites, why not?
                             i += loadFavorites(db, resId);
                             added = false;
-                            mMaxItemId = -1;
                         } else {
                             Log.w(TAG, String.format("Skipping <include workspace=0x%08x>", resId));
                         }