React Intro: Remove additional resources (#30924)

Author: Desel72

react/getting_started_with_react/react_components.md

@@ -91,9 +91,3 @@ The following questions are an opportunity to reflect on key topics in this less
 - [What does a React element look like?](#what-are-components)
 - [How would you create a functional component?](#how-to-create-components)
 - [How do you export and then import a component?](#where-do-components-live)
-
-### Additional resources
-
-This section contains helpful links to related content. It isn't required, so consider it supplemental.
-
-- Geeks for Geeks has a quick [ReactJS Functional Components tutorial](https://www.geeksforgeeks.org/reactjs-functional-components/). It introduces some new ways of calling functional components you can play around with if you feel a burning desire to do so. For the time being don't worry too much about Class components, which the resource also goes into.

react/introduction/introduction_to_react.md

@@ -54,9 +54,3 @@ The following questions are an opportunity to reflect on key topics in this less
 
 - [What is the purpose of React?](#what-is-react)
 - [What are the benefits of using React?](#why-cover-react)
-
-### Additional resources
-
-This section contains helpful links to related content. It isn't required, so consider it supplemental.
-
-- If you are interested in learning more about React's history, check out this [documentary on React's origin story by CultRepo](https://www.youtube.com/watch?v=8pDqJVdNa44).

react/introduction/setting_up_a_react_environment.md

@@ -149,9 +149,3 @@ The following questions are an opportunity to reflect on key topics in this less
 - [What is in the `public` folder?](#delving-deeper)
 - [What is in the `src` folder?](#delving-deeper)
 - [Why are the React Developer Tools useful?](#developer-tools)
-
-### Additional resources
-
-This section contains helpful links to related content. It isn't required, so consider it supplemental.
-
-- [Intro to React Dev Tools](https://www.youtube.com/watch?v=rb1GWqCJid4) gets you up to speed with a quick overview of the basic features of React Dev tools in Chrome.