removed an unused session

src/main/java/org/gcube/data/access/storagehub/services/ACLManager.java

@@ -28,7 +28,6 @@ import javax.ws.rs.core.Response;
 
 import org.apache.jackrabbit.api.security.JackrabbitAccessControlList;
 import org.apache.jackrabbit.commons.jackrabbit.authorization.AccessControlUtils;
-import org.gcube.common.authorization.library.AuthorizationEntry;
 import org.gcube.common.authorization.library.provider.AuthorizationProvider;
 import org.gcube.common.gxrest.response.outbound.GXOutboundErrorResponse;
 import org.gcube.common.storagehub.model.Excludes;

src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java

@@ -326,7 +326,6 @@ public class GroupManager {
 
 			session = (JackrabbitSession) repository.getRepository().login(CredentialHandler.getAdminCredentials(context));
 
-			session = (JackrabbitSession) repository.getRepository().login(CredentialHandler.getAdminCredentials(context));
 			VRE vreFolder = Utils.getVreFolderItemByGroupNameAndUser(session, groupId, AuthorizationProvider.instance.get().getClient().getId(), node2Item, vreManager, Excludes.ALL);
 			AccessControlManager acm = session.getAccessControlManager();
 			//authChecker.checkAdministratorControl(session, (VreFolder)vreFolder.getVreFolder());