code: function (req, cb) {
          let criteria = {
              "clientId": req.soajs.inputmaskData.clientId
          };
          let combo = {
              collection: tokenCollectionName,
              condition: criteria
          };
          libProduct.model.removeEntry(req.soajs, combo, function (error, result) {
              let data = {config: req.soajs.config, error: error, code: 404};
              checkIfError(req, cb, data, function () {
                  return cb(null, result.result);
              });
          });
      }
docs: Delete All tokens of a client