removed duplicate import ResponseGenerator

Author: kishankavala

api/src/main/java/org/apache/cloudstack/api/ResponseGenerator.java

@@ -26,7 +26,6 @@
 import com.cloud.storage.ObjectStore;
 import org.apache.cloudstack.affinity.AffinityGroup;
 import org.apache.cloudstack.affinity.AffinityGroupResponse;
-import org.apache.cloudstack.affinity.AffinityGroupResponse;
 import org.apache.cloudstack.api.ApiConstants.HostDetails;
 import org.apache.cloudstack.api.ApiConstants.VMDetails;
 import org.apache.cloudstack.api.ResponseObject.ResponseView;