Remove onCreate() method that should not be there.

Change-Id: I8355dd78f910afa9895d2fa00cb627a0885d9eec

core/java/com/android/server/SystemService.java

@@ -84,14 +84,6 @@ public abstract class SystemService {
         return getManager().isSafeMode();
     }
 
-    /**
-     * Services are not yet available. This is a good place to do setup work that does
-     * not require other services.
-     *
-     * @param context The system context.
-     */
-    public void onCreate(Context context) {}
-
     /**
      * Called when the dependencies listed in the @Service class-annotation are available
      * and after the chosen start phase.