Remove references to _.

pickBy.js

@@ -7,7 +7,6 @@ import getAllKeysIn from './_getAllKeysIn.js';
  * truthy for. The predicate is invoked with two arguments: (value, key).
  *
  * @static
- * @memberOf _
  * @since 4.0.0
  * @category Object
  * @param {Object} object The source object.
@@ -17,7 +16,7 @@ import getAllKeysIn from './_getAllKeysIn.js';
  *
  * var object = { 'a': 1, 'b': '2', 'c': 3 };
  *
- * _.pickBy(object, _.isNumber);
+ * pickBy(object, isNumber);
  * // => { 'a': 1, 'c': 3 }
  */
 function pickBy(object, predicate) {