Fix checkstyle

Author: alextwoods

test/protocol-tests-core/src/main/java/software/amazon/awssdk/protocol/asserts/unmarshalling/UnmarshalledErrorAssertion.java

@@ -18,6 +18,7 @@
 
 import static org.junit.Assert.fail;
 import static org.unitils.reflectionassert.ReflectionAssert.assertReflectionEquals;
+
 import com.fasterxml.jackson.databind.JsonNode;
 import java.lang.reflect.Field;
 import org.junit.Assert;

test/protocol-tests-core/src/main/java/software/amazon/awssdk/protocol/runners/UnmarshallingTestRunner.java

@@ -32,7 +32,6 @@
 import software.amazon.awssdk.protocol.asserts.unmarshalling.UnmarshallingTestContext;
 import software.amazon.awssdk.protocol.model.GivenResponse;
 import software.amazon.awssdk.protocol.model.TestCase;
-import software.amazon.awssdk.protocol.model.WhenAction;
 import software.amazon.awssdk.protocol.reflect.ClientReflector;
 import software.amazon.awssdk.protocol.reflect.ShapeModelReflector;
 import software.amazon.awssdk.utils.IoUtils;