GitUpdateProcessingTest: Remove unnecessary suppression of 'unchecked' warning

Change-Id: Iea8d1e3110f839262bd45d6213855dfbffae02b5
diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java b/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java
index e23c116..549890a 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java
@@ -31,7 +31,6 @@
 import org.junit.Before;
 import org.junit.Test;
 
-@SuppressWarnings("unchecked")
 public class GitUpdateProcessingTest {
   private EventDispatcher dispatcherMock;
   private GitUpdateProcessing gitUpdateProcessing;