[Portal] Remove unused import from sign-in methods page

Author: joaquim-verges

apps/portal/src/app/connect/wallet/sign-in-methods/configure/page.mdx

@@ -11,7 +11,6 @@ import {
     WalletsConnectIcon
 } from "@/icons"
 import EcosystemSocialConfig from '../assets/social-config.png'
-import { getSocialIcon } from "thirdweb/wallets/in-app";
 
 # Sign-In Methods