Is there any script for deleting whole whislist on steam beside Enhanced Steam?

Enhanced steam should work , but it most likely broke since you literally have 1/3rd of steam in your wishlist ....

Have you tried with another browser?

That's a lot of wishes.

4,416 wishlist items

Mother of god.

Turn off ES, delete all what you want, turn on ES.

ES doesn't remove anything from my wishlist (186 items) either. Like Bazilus said, I have to turn off ES or use the Steam client to remove something.

Yeah, it's never worked for me. Use the Steam client or the store pages.

A quick and dirty thing that may work:

// ==UserScript==
// @name        Steam wishlist cleaner
// @version     0.1
// @grant       GM_addStyle
// @require     https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js
// @match       http://steamcommunity.com/id/RetiredTurtle/wishlist*
// ==/UserScript==

$(document).ready(function(){
    document.forms[0].submit();
});

Copy/paste as a new Tampermonkey / Greasemonkey / whatever script engine, then go to your wishlist page and wait for it reloading 4416 times :)
Edit: and of course remove the script afterwards, or it will continue emptying your WL in the future.

I've added almost 9000 games on steam soi have to delete almost 5000 games until it can recognise my wishlist, freaking damn. better get to work then