chore(spanner): lint fix and remove sleep

Author: harshachinta

google-cloud-spanner/src/main/java/com/google/cloud/spanner/DatabaseClientImpl.java

@@ -59,7 +59,7 @@ class DatabaseClientImpl implements DatabaseClient {
         /* useMultiplexedSessionBlindWrite = */ false,
         /* multiplexedSessionDatabaseClient = */ null,
         tracer,
-        false);
+        /* useMultiplexedSessionForRW = */ false);
   }
 
   DatabaseClientImpl(

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

@@ -752,18 +752,16 @@ public void testAsyncRunnerIsNonBlockingWithMultiplexedSession() throws Exceptio
     assertEquals(1L, client.multiplexedSessionDatabaseClient.getNumSessionsAcquired().get());
     assertEquals(1L, client.multiplexedSessionDatabaseClient.getNumSessionsReleased().get());
   }
-  
+
   @Test
-  public void testAbortedReadWriteTxnUsesPreviousTxnIdOnRetryWithInlineBegin()
-      throws InterruptedException {
+  public void testAbortedReadWriteTxnUsesPreviousTxnIdOnRetryWithInlineBegin() {
     DatabaseClientImpl client =
         (DatabaseClientImpl) spanner.getDatabaseClient(DatabaseId.of("p", "i", "d"));
     // Force the Commit RPC to return Aborted the first time it is called. The exception is cleared
     // after the first call, so the retry should succeed.
     mockSpanner.setCommitExecutionTime(
         SimulatedExecutionTime.ofException(
             mockSpanner.createAbortedException(ByteString.copyFromUtf8("test"))));
-    Thread.sleep(10000);
     TransactionRunner runner = client.readWriteTransaction();
     AtomicReference<ByteString> validTransactionId = new AtomicReference<>();
     runner.run(
@@ -840,18 +838,16 @@ public void testAbortedReadWriteTxnUsesPreviousTxnIdOnRetryWithInlineBegin()
             .getReadWrite()
             .getMultiplexedSessionPreviousTransactionId());
   }
-  
+
   @Test
-  public void testAbortedReadWriteTxnUsesPreviousTxnIdOnRetryWithExplicitBegin()
-      throws InterruptedException {
+  public void testAbortedReadWriteTxnUsesPreviousTxnIdOnRetryWithExplicitBegin() {
     DatabaseClientImpl client =
         (DatabaseClientImpl) spanner.getDatabaseClient(DatabaseId.of("p", "i", "d"));
     // Force the Commit RPC to return Aborted the first time it is called. The exception is cleared
     // after the first call, so the retry should succeed.
     mockSpanner.setCommitExecutionTime(
         SimulatedExecutionTime.ofException(
             mockSpanner.createAbortedException(ByteString.copyFromUtf8("test"))));
-    Thread.sleep(10000);
     TransactionRunner runner = client.readWriteTransaction();
     AtomicReference<ByteString> validTransactionId = new AtomicReference<>();
     Long updateCount =