chore(spanner): lint fix

Author: harshachinta

google-cloud-spanner/src/test/java/com/google/cloud/spanner/AsyncRunnerTest.java

@@ -20,7 +20,6 @@
 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
-import static org.junit.Assume.assumeFalse;
 
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;

google-cloud-spanner/src/test/java/com/google/cloud/spanner/AsyncTransactionManagerTest.java

@@ -28,7 +28,6 @@
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
-import static org.junit.Assume.assumeFalse;
 
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutureCallback;
@@ -944,7 +943,7 @@ public void asyncTransactionManagerBatchUpdateAbortedWithoutGettingResult() thro
     List<Class<? extends AbstractMessage>> requests = mockSpanner.getRequestTypes();
     // Remove the CreateSession requests for multiplexed sessions, as those are not relevant for
     // this test if multiplexed session for read-write is not enabled.
-    if (!isMultiplexedSessionsEnabledForRW()){
+    if (!isMultiplexedSessionsEnabledForRW()) {
       requests.removeIf(request -> request == CreateSessionRequest.class);
     }
     int size = Iterables.size(requests);