Update content/academy/anti_scraping/mitigation/using_proxies.md

Co-authored-by: Ondra Urban <[email protected]>

Author: mstephen19

content/academy/anti_scraping/mitigation/using_proxies.md

@@ -131,7 +131,6 @@ Though we will discuss it more in-depth in future courses, it is still important
 import { Actor } from 'apify';
 
 const proxyConfiguration = await  Actor.createProxyConfiguration({
-    groups: ['SHADER'],
     countryCode: 'US'
 });
 ```