[ci skip] Remove utils from API docs. Closes #5992

lib/sequelize.js

@@ -1200,12 +1200,6 @@ Sequelize.options = {hooks: {}};
 Sequelize.prototype.Sequelize = Sequelize;
 Sequelize.prototype.Sequelize = Sequelize;
 
 
 /**
 /**
- * A reference to sequelize utilities. Most users will not need to use these utils directly. However, you might want to use `Sequelize.Utils._`, which is a reference to the lodash library, if you don't already have it imported in your project.
- * @property Utils
- */
-Sequelize.prototype.Utils = Sequelize.Utils = Utils;
-
-/**
  * A handy reference to the bluebird Promise class
  * A handy reference to the bluebird Promise class
  * @property Promise
  * @property Promise
  */
  */