Remove unused import in test

(cherry picked from commit ab97c01)

Author: acogoluegnes

src/test/java/com/rabbitmq/client/test/ssl/HostnameVerification.java

@@ -19,7 +19,6 @@
 import com.rabbitmq.client.Connection;
 import com.rabbitmq.client.ConnectionFactory;
 import com.rabbitmq.client.test.TestUtils;
-import com.rabbitmq.tools.Host;
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.junit.runner.RunWith;