Bump to v4.12.0.

_hashDelete.js

@@ -1,15 +1,17 @@
-define(['./_hashHas'], function(hashHas) {
+define([], function() {
 
   /**
    * Removes `key` and its value from the hash.
    *
    * @private
+   * @name delete
+   * @memberOf Hash
    * @param {Object} hash The hash to modify.
    * @param {string} key The key of the value to remove.
    * @returns {boolean} Returns `true` if the entry was removed, else `false`.
    */
-  function hashDelete(hash, key) {
-    return hashHas(hash, key) && delete hash[key];
+  function hashDelete(key) {
+    return this.has(key) && delete this.__data__[key];
   }
 
   return hashDelete;