removed not used method

Author: csviri

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/source/informer/ManagedInformerEventSource.java

@@ -135,8 +135,4 @@ public Stream<R> list(Predicate<R> predicate) {
     return cache.list(predicate);
   }
 
-  public void setControllerConfiguration(ControllerConfiguration<P> controllerConfiguration) {
-    this.controllerConfiguration = controllerConfiguration;
-  }
-
 }