ChangeIT: Remove unused local variable

Change-Id: I3be9493979bcab3460aa276419e206a7b29a4d09
Signed-off-by: Edwin Kempin <ekempin@google.com>

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/change/ChangeIT.java

@@ -1009,8 +1009,7 @@ public class ChangeIT extends AbstractDaemonTest {
     in.newBranch = true;
 
     exception.expect(ResourceConflictException.class);
-    ChangeInfo info = gApi
-        .changes()
+    gApi.changes()
         .create(in)
         .get();
   }