Stop calling unregisterWorkqueue which was removed in gerrit

Change-Id: I5bc07b7955d2410f9775e12e3047aad1e36f544c
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/ExecutorProvider.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/ExecutorProvider.java
index 9a91fcf..7f655e8 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/ExecutorProvider.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/ExecutorProvider.java
@@ -35,7 +35,6 @@
   @Override
   public void stop() {
     executor.shutdown();
-    executor.unregisterWorkQueue();
     executor = null;
   }
 
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheExecutorProviderTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheExecutorProviderTest.java
index fbc11e0..696092c 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheExecutorProviderTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheExecutorProviderTest.java
@@ -56,7 +56,6 @@
     assertThat(cacheExecutorProvider.get()).isEqualTo(executorMock);
     cacheExecutorProvider.stop();
     verify(executorMock).shutdown();
-    verify(executorMock).unregisterWorkQueue();
     assertThat(cacheExecutorProvider.get()).isNull();
   }
 }
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/event/EventExecutorProviderTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/event/EventExecutorProviderTest.java
index f72ddc9..68c6803 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/event/EventExecutorProviderTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/event/EventExecutorProviderTest.java
@@ -49,7 +49,6 @@
     assertThat(eventsExecutorProvider.get()).isEqualTo(executorMock);
     eventsExecutorProvider.stop();
     verify(executorMock).shutdown();
-    verify(executorMock).unregisterWorkQueue();
     assertThat(eventsExecutorProvider.get()).isNull();
   }
 }
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexExecutorProviderTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexExecutorProviderTest.java
index cc4ba99..cd62730 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexExecutorProviderTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexExecutorProviderTest.java
@@ -54,7 +54,6 @@
     assertThat(indexExecutorProvider.get()).isEqualTo(executorMock);
     indexExecutorProvider.stop();
     verify(executorMock).shutdown();
-    verify(executorMock).unregisterWorkQueue();
     assertThat(indexExecutorProvider.get()).isNull();
   }
 }