tweak: remove pingcap account track script (#654)

Author: wd0517

gatsby-browser.js

@@ -1,7 +1,5 @@
 import "./src/styles/global.css";
 
-import { pageView } from "./scripts/track";
-
 export { default as wrapRootElement } from "./src/state/wrap-with-provider";
 
 export const onClientEntry = () => {
@@ -19,9 +17,3 @@ export const onClientEntry = () => {
   =====================================
   `);
 };
-
-export const onRouteUpdate = ({ location, prevLocation }) => {
-  if (process.env.NODE_ENV === "production") {
-    pageView();
-  }
-};