Remove obsolete doc references to LauncherAppWidgetBinder

Change-Id: I8b9c2d8145d56b891f26dabebead35275d81b6ba
diff --git a/src/com/android/launcher2/LauncherSettings.java b/src/com/android/launcher2/LauncherSettings.java
index a438d47..9c685ce 100644
--- a/src/com/android/launcher2/LauncherSettings.java
+++ b/src/com/android/launcher2/LauncherSettings.java
@@ -91,8 +91,7 @@
     }
 
     /**
-     * Favorites. When changing these values, be sure to update
-     * {@link com.android.settings.LauncherAppWidgetBinder} as needed.
+     * Favorites.
      */
     static final class Favorites implements BaseLauncherColumns {
         /**