feat: update gatsby config for chinese (#46424)

client/gatsby-config.js

@@ -10,10 +10,7 @@ const { clientLocale, curriculumLocale, homeLocation, sentryClientDSN } =
   envData;
 
 const curriculumIntroRoot = path.resolve(__dirname, './src/pages');
-const pathPrefix =
-  clientLocale === 'english' || clientLocale === 'chinese'
-    ? ''
-    : '/' + clientLocale;
+const pathPrefix = clientLocale === 'english' ? '' : '/' + clientLocale;
 
 module.exports = {
   flags: {

client/src/__mocks__/gatsby.ts

@@ -19,10 +19,7 @@ module.exports = {
       })
   ),
   withPrefix: jest.fn().mockImplementation((path: string) => {
-    const pathPrefix =
-      clientLocale === 'english' || clientLocale === 'chinese'
-        ? ''
-        : '/' + clientLocale;
+    const pathPrefix = clientLocale === 'english' ? '' : '/' + clientLocale;
     return pathPrefix + path;
   }),
   StaticQuery: jest.fn(),