Don't fetch soapbox.json if frontend_configurations is available

src/actions/soapbox.ts

@@ -65,8 +65,6 @@ const fetchSoapboxConfig = (host: string | null) =>
         if (data.soapbox_fe) {
           dispatch(importSoapboxConfig(data.soapbox_fe, host));
           return data.soapbox_fe;
-        } else {
-          return dispatch(fetchSoapboxJson(host));
         }
       });
     } else {