GetRelatedIT.getRelatedManyGroups: Remove unused commit list

Change-Id: Ic1b984f690b80750408dc487e8654b6907d6df04
Signed-off-by: Edwin Kempin <ekempin@google.com>
diff --git a/javatests/com/google/gerrit/acceptance/server/change/GetRelatedIT.java b/javatests/com/google/gerrit/acceptance/server/change/GetRelatedIT.java
index 40afa8a..803580c 100644
--- a/javatests/com/google/gerrit/acceptance/server/change/GetRelatedIT.java
+++ b/javatests/com/google/gerrit/acceptance/server/change/GetRelatedIT.java
@@ -44,7 +44,6 @@
 import com.google.gerrit.testing.TestTimeUtil;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
 import org.eclipse.jgit.junit.TestRepository;
@@ -558,7 +557,6 @@
 
   @Test
   public void getRelatedManyGroups() throws Exception {
-    List<RevCommit> commits = new ArrayList<>();
     RevCommit last = null;
     int n = 2 * MAX_TERMS;
     assertThat(n).isGreaterThan(indexConfig.maxTerms());
@@ -567,7 +565,6 @@
       last = cb.add("a.txt", Integer.toString(i)).message("subject: " + i).create();
       testRepo.reset(last);
       assertPushOk(pushHead(testRepo, "refs/for/master", false), "refs/for/master");
-      commits.add(last);
     }
 
     ChangeData cd = getChange(last);