fix: http ping agent (#1826)

src/server/api/routers/app.ts

@@ -47,7 +47,6 @@ export const appRouter = createTRPCRouter({
           // Cache for 5 minutes
           'Cache-Control': 'max-age=300'
         },
-        httpAgent: agent,
         httpsAgent: agent,
         timeout: 12 * 1000, // 12 seconds,
         maxRedirects: 3