made changes in tanks

src/controllers/tanksController.js

@@ -100,9 +100,10 @@ exports.updateTanksInfo = async (req, reply) => {
 //delete selected tank
 exports.deleteTanksInfo = async (req, reply) => {
   try {
-    var customerId = req.params.customerId;
+    const customerId = req.params.customerId;
-    var tankName = req.query.tankName;
+    const tankName = req.query.tankName;
-    const tank = await Tank.findOneAndDelete({ tankName: tankName,customerId:customerId,tankLocation:req.body.tankLocation.toLowerCase() });
+    const tankLocation = req.body.tankLocation.toLowerCase();
+    const tank = await Tank.findOneAndDelete({ tankName: tankName,customerId:customerId,tankLocation:tankLocation });
 
     reply.send({ status_code: 200, data: tank});
    // return tank;