fix: oauth callback linking on trusted provider

demo/nextjs/lib/auth.ts

@@ -86,10 +86,4 @@ export const auth = betterAuth({
 			clientSecret: process.env.GOOGLE_CLIENT_SECRET || "",
 		},
 	},
-	account: {
-		accountLinking: {
-			trustedProviders: ["google", "github"],
-			requireEmailVerified: true,
-		},
-	},
 });