Removing unused legacy price code

Author: Nazar65

lib/web/mage/adminhtml/tools.js

@@ -89,12 +89,6 @@ function checkByProductPriceType(elem) {
 
 }
 
-Event.observe(window, 'load', function () {
-    if ($('price_default') && $('price_default').checked) {
-        $('price').disabled = 'disabled';
-    }
-});
-
 function toggleSeveralValueElements(checkbox, containers, excludedElements, checked) {
     'use strict';