Fix Checkstyle violations for imports

Author: artembilan

src/test/java/org/springframework/integration/aws/lock/DynamoDbLockRegistryTests.java

@@ -20,7 +20,6 @@
 
 
 import java.lang.reflect.Method;
-
 import java.util.Map;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Future;