Landing pull request 404. Removes unused hasOwn var declaration. Fixes #9510.

More Details:
 - jquery#404
 - http://bugs.jquery.com/ticket/9510

Author: rwaldron

src/event.js

@@ -1,7 +1,6 @@
 (function( jQuery ) {
 
-var hasOwn = Object.prototype.hasOwnProperty,
-	rnamespaces = /\.(.*)$/,
+var rnamespaces = /\.(.*)$/,
 	rformElems = /^(?:textarea|input|select)$/i,
 	rperiod = /\./g,
 	rspaces = / /g,