Code refactoring

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/GroupManagementProviderService.java

@@ -25,7 +25,6 @@ import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
 import org.wso2.carbon.device.mgt.common.group.mgt.GroupAlreadyEixistException;
 import org.wso2.carbon.device.mgt.common.group.mgt.GroupManagementException;
 import org.wso2.carbon.device.mgt.common.group.mgt.GroupUser;
-import org.wso2.carbon.device.mgt.core.group.mgt.DeviceGroupBuilder;
 
 import java.util.List;
 
@@ -77,6 +76,7 @@ public interface GroupManagementProviderService {
 
     /**
      * Get the device group provided the device group id.
+     *
      * @param groupId
      * @return
      * @throws GroupManagementException
@@ -300,6 +300,7 @@ public interface GroupManagementProviderService {
 
     /**
      * Get the group of device.
+     *
      * @param deviceIdentifier
      * @return
      * @throws GroupManagementException