Improve the subscribed devices and category details APIs

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/SubscriptionManagerImpl.java

@@ -628,7 +628,6 @@ public class SubscriptionManagerImpl implements SubscriptionManager {
         PaginationResult paginationResult = new PaginationResult();
         try {
             ConnectionManagerUtil.openDBConnection();
-
             ApplicationDTO applicationDTO = this.applicationDAO
                     .getAppWithRelatedRelease(appUUID, tenantId);
             int applicationReleaseId = applicationDTO.getApplicationReleaseDTOs().get(0).getId();