Revert "Add docs for cra4 troubleshooting (#1919)" (#1985)

Author: reesscot

docs/src/pages/[platform]/getting-started/troubleshooting/troubleshooting.react.mdx

@@ -89,60 +89,6 @@ export default defineConfig({
 ...
 ```
 
-## Create React App
-
-Versions of [Create React App](https://create-react-app.dev/) prior to v5 may not include necessary plugins to transpile ES2020 features. This may result in an `Unexpected token` error:
-
-```bash
-Module parse failed: Unexpected token
-File was processed with these loaders:
- * ./node_modules/babel-loader/lib/index.js
-You may need an additional loader to handle the result of these loaders.
-```
-
-The best solution to this error is to upgrade the version of Create React App to v5 where ES2020 features are transpiled correctly:
-
-```shell
-npm install --save react-scripts@5
-```
-
-If you are unable to upgrade your `react-scripts` version, try making your browser target list less aggressive by doing the following:
-
-**1.** Remove the `.cache` directory from your project's `node_modules`:
-
-```shell
-rm -rf node_modules/.cache
-```
-
-**2.** Change the `browserslist` block in your `package.json` from:
-
-```json
-"browserslist": {
-  "production": [
-    ">0.2%",
-    "not dead",
-    "not op_mini all"
-  ],
-  "development": [
-    "last 1 chrome version",
-    "last 1 firefox version",
-    "last 1 safari version"
-  ]
-}
-```
-
-to the following:
-
-```json
-"browserslist": [
-  ">0.2%",
-  "not dead",
-  "not op_mini all"
-]
-```
-
-**3.** Try rebuilding and starting your project.
-
 ## Jest
 
 As of v2.15.0 of `@aws-amplify/ui-react` which included the release of Geo components, users of the Jest testing framework may run into the following error when attempting to run tests:
@@ -154,7 +100,6 @@ window.URL.createObjectURL is not a function
 Please follow the steps below to resolve this issue.
 
 **1.** Navigate to or create a [Jest setup file](https://jestjs.io/docs/configuration#setupfilesafterenv-array) for your project.
-
 **2.** Add the following code to polyfill the unrecognized function in your Jest setup file:
 
 ```js