fix service request deletion command

TSMatch_API/src/shared/repository/RequestRepository.ts

@@ -37,10 +37,8 @@ export class RequestRepository {
      */
     static deleteRequest(dbContext: DbContext, requestId) {
         return dbContext.callExtension("runQuery",
-            `match (t:Taxonomy)<-[rel1]-(r:Request {objectId: $objectId})<-[rel2]-(s:Sensor)
-            delete rel1, rel2, r;
-            match (r2:Request {objectId: $objectId})-[rel3]->(t2:Taxonomy)
-            delete rel3, r2`, {
+            `match (t)-[rel]-(r:Request {objectId: $objectId})
+            delete rel`, {
                 objectId: requestId
             });
     }