test: update jest.config.js to remove private folder (#6639)

Author: kuhe

jest.config.js

@@ -4,5 +4,5 @@
  * For tests that involve network requests to live services, see jest.config.e2e.js.
  */
 module.exports = {
-  projects: ["<rootDir>/private/*/jest.config.js", "<rootDir>/packages/*/jest.config.js"],
+  projects: ["<rootDir>/packages/*/jest.config.js"],
 };