Removed check on element in case it is undefined in ArrayIndexOf - according to spec this is OK.

Review URL: http://codereview.chromium.org/545056

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3603 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/array.js

@@ -983,9 +983,6 @@ function ArrayMap(f, receiver) {
 
 
 function ArrayIndexOf(element, index) {
-  if (IS_UNDEFINED(element)) {
-    throw MakeTypeError('array_indexof_not_defined', [element]);
-  }
   var length = this.length;
   if (index == null) {
     index = 0;