HADOOP-13289. Remove unused variables in TestFairCallQueue. Contributed by Ye Zhou.

(cherry picked from commit 13814832331ad691b898cd9f602b0a0a771d7928)

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestFairCallQueue.java

@@ -32,7 +32,6 @@ import java.util.concurrent.BlockingQueue;
 
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.conf.Configuration;
-import org.mockito.Matchers;
 
 public class TestFairCallQueue extends TestCase {
   private FairCallQueue<Schedulable> fcq;
@@ -52,14 +51,6 @@ public class TestFairCallQueue extends TestCase {
     return mockCall(id, 0);
   }
 
-  // A scheduler which always schedules into priority zero
-  private RpcScheduler alwaysZeroScheduler;
-  {
-    RpcScheduler sched = mock(RpcScheduler.class);
-    when(sched.getPriorityLevel(Matchers.<Schedulable>any())).thenReturn(0); // always queue 0
-    alwaysZeroScheduler = sched;
-  }
-
   @SuppressWarnings("deprecation")
   public void setUp() {
     Configuration conf = new Configuration();
@@ -124,7 +115,6 @@ public class TestFairCallQueue extends TestCase {
 
   public void testOfferSucceedsWhenScheduledLowPriority() {
     // Scheduler will schedule into queue 0 x 5, then queue 1
-    RpcScheduler sched = mock(RpcScheduler.class);
     int mockedPriorities[] = {0, 0, 0, 0, 0, 1, 0};
     for (int i = 0; i < 5; i++) { assertTrue(fcq.offer(mockCall("c", mockedPriorities[i]))); }