Remove unused requirejs alias resources defined

Author: mrtuvn

app/code/Magento/Theme/view/frontend/requirejs-config.js

@@ -27,9 +27,7 @@ var config = {
             'menu':                   'mage/menu',
             'popupWindow':            'mage/popup-window',
             'validation':             'mage/validation/validation',
-            'welcome':                'Magento_Theme/js/view/welcome',
             'breadcrumbs':            'Magento_Theme/js/view/breadcrumbs',
-            'criticalCssLoader':      'Magento_Theme/js/view/critical-css-loader',
             'jquery/ui':              'jquery/compat',
             'cookieStatus':           'Magento_Theme/js/cookie-status'
         }