frontend/config: remove useless comment

Author: dannywillems

frontend/src/app/core/services/config.service.ts

@@ -5,8 +5,6 @@ import { Store } from '@ngrx/store';
 import { MinaState } from '@app/app.setup';
 import { filter } from 'rxjs';
 
-// NOTE: When modifying this service, update the documentation at:
-// website/docs/developers/frontend/environment-configuration.mdx
 @Injectable({
   providedIn: 'root',
 })