refactor: make eventSourceDeRegisteredForResource a default method #470

Author: lburgazzoli

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/AbstractEventSource.java

@@ -8,7 +8,4 @@ public abstract class AbstractEventSource implements EventSource {
   public void setEventHandler(EventHandler eventHandler) {
     this.eventHandler = eventHandler;
   }
-
-  @Override
-  public void eventSourceDeRegisteredForResource(String customResourceUid) {}
 }

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/EventSource.java

@@ -19,5 +19,5 @@ default void close() {}
 
   void setEventHandler(EventHandler eventHandler);
 
-  void eventSourceDeRegisteredForResource(String customResourceUid);
+  default void eventSourceDeRegisteredForResource(String customResourceUid) {}
 }