remove void discriminator

Author: csviri

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/api/config/AnnotationControllerConfiguration.java

@@ -328,7 +328,7 @@ private Object createKubernetesResourceConfig(Class<? extends DependentResource>
   @SuppressWarnings({"unchecked"})
   private ResourceDiscriminator<?, ? extends HasMetadata> instantiateDiscriminatorIfNotVoid(
       Class<? extends ResourceDiscriminator> discriminator) {
-    if (discriminator != VoidResourceDiscriminator.class) {
+    if (discriminator != ResourceDiscriminator.class) {
       return instantiateAndConfigureIfNeeded(discriminator, ResourceDiscriminator.class,
           CONTROLLER_CONFIG_ANNOTATION);
     }

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/api/reconciler/VoidResourceDiscriminator.java

@@ -7,7 +7,6 @@
 
 import io.javaoperatorsdk.operator.api.reconciler.Constants;
 import io.javaoperatorsdk.operator.api.reconciler.ResourceDiscriminator;
-import io.javaoperatorsdk.operator.api.reconciler.VoidResourceDiscriminator;
 import io.javaoperatorsdk.operator.processing.event.source.filter.*;
 import io.javaoperatorsdk.operator.processing.event.source.filter.GenericFilter;
 import io.javaoperatorsdk.operator.processing.event.source.filter.OnAddFilter;
@@ -72,5 +71,5 @@
    */
   Class<? extends GenericFilter> genericFilter() default GenericFilter.class;
 
-  Class<? extends ResourceDiscriminator> resourceDiscriminator() default VoidResourceDiscriminator.class;
+  Class<? extends ResourceDiscriminator> resourceDiscriminator() default ResourceDiscriminator.class;
 }