App-mgt store code refactors

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/services/impl/SubscriptionManagementAPIImpl.java

@@ -31,7 +31,6 @@ import javax.validation.Valid;
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.Response;
-import javax.ws.rs.core.Variant;
 import java.util.HashMap;
 import java.util.List;
 

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

@@ -33,7 +33,6 @@ import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOFactory;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.stream.Collectors;
 
 /**
  * This is the default implementation for the Subscription Manager.