Fix nits

Author: drew-gross

src/Adapters/Storage/Mongo/MongoTransform.js

@@ -15,14 +15,11 @@ var Parse = require('parse/node').Parse;
 // in the value are converted to a mongo update form. Otherwise they are
 // converted to static data.
 //
-// validate: true indicates that key names are to be validated.
-//
 // Returns an object with {key: key, value: value}.
 function transformKeyValue(schema, className, restKey, restValue, {
   inArray,
   inObject,
   update,
-  validate,
 } = {}) {
   // Check if the schema is known since it's a built-in field.
   var key = restKey;

src/Controllers/DatabaseController.js

@@ -624,16 +624,15 @@ DatabaseController.prototype.find = function(className, query, {
         if (fieldName === '_created_at') {
           fieldName = 'createdAt';
           sort['createdAt'] = sort['_created_at'];
-        }
-        if (fieldName === '_updated_at') {
+        } else if (fieldName === '_updated_at') {
           fieldName = 'updatedAt';
           sort['updatedAt'] = sort['_updated_at'];
         }
 
         if (!SchemaController.fieldNameIsValid(fieldName)) {
           throw new Parse.Error(Parse.Error.INVALID_KEY_NAME, `Invalid field name: ${fieldName}.`);
         }
-        let mongoKey = this.transform.transformKeyValue(schemaController, className, fieldName, null).key;
+        const mongoKey = this.transform.transformKeyValue(schemaController, className, fieldName, null).key;
         mongoOptions.sort[mongoKey] = sort[fieldName];
       }
     }