chore: remove dead extensions (#31945)

* chore: remove dead extensions

* chore: remove oxford commas

* Examples update

* Link markup fix

---------

Co-authored-by: rebloor <[email protected]>

files/en-us/mozilla/add-ons/webextensions/what_are_webextensions/index.md

@@ -12,31 +12,29 @@ An extension adds features and functions to a browser. It's created using famili
 
 **Enhance or complement a website**: Use an add-on to deliver additional in-browser features or information from your website. Allow users to collect details from pages they visit to enhance the service you offer.
 
-![Amazon add-on example providing price comparison features](amazon_add_on.png)
-
-Examples: [Amazon Assistant for Firefox](https://addons.mozilla.org/en-US/firefox/addon/amazon-browser-bar/), [OneNote Web Clipper](https://addons.mozilla.org/en-US/firefox/addon/onenote-clipper/), and [Grammarly for Firefox](https://addons.mozilla.org/en-US/firefox/addon/grammarly-1/).
+Examples: [Grammarly for Firefox](https://addons.mozilla.org/en-US/firefox/addon/grammarly-1/), [Enhancer for YouTube](https://addons.mozilla.org/firefox/addon/enhancer-for-youtube/), and ([Control Panel for Twitter](https://addons.mozilla.org/firefox/addon/control-panel-for-twitter/).
 
 **Let users show their personality**: Browser extensions can manipulate the content of web pages; for example, letting users add their favorite logo or picture as a background to every page they visit. Extensions may also enable users to update the look of the Firefox UI, the same way standalone [theme add-ons](https://extensionworkshop.com/documentation/themes/) do.
 
 ![My Web New Tab add-on showing a Batman theme](myweb_new_tab_add_on.png)
 
-Examples: [MyWeb New Tab](https://chrome.google.com/webstore/detail/myweb-new-tab/cnbiadnhebmicjcbpgajglfemclnlagh), [Tabliss](https://addons.mozilla.org/en-US/firefox/addon/tabliss/), and [VivaldiFox](https://addons.mozilla.org/en-US/firefox/addon/vivaldifox/).
+Examples: [Tabliss](https://addons.mozilla.org/en-US/firefox/addon/tabliss/), [Stylus](https://addons.mozilla.org/firefox/addon/styl-us/), and [Emoji](https://addons.mozilla.org/firefox/addon/emoji-sav/).
 
 **Add or remove content from web pages**: You might want to help users block intrusive ads from web pages, provide access to a travel guide whenever a country or city is mentioned in a web page, or reformat page content to offer a consistent reading experience. With the ability to access and update both a page's HTML and CSS, extensions can help users see the web the way they want to.
 
 ![uBlock origin add-on example with blocked tracker statistics](ublock_origin_add_on.png)
 
-Examples: [uBlock Origin](https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/), [Reader](https://addons.mozilla.org/en-US/firefox/addon/reader/), and [Toolbox for Google Play Store™](https://addons.mozilla.org/en-US/firefox/addon/toolbox-google-play-store/).
+Examples: [uBlock Origin](https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/), [Return YouTube Dislike](https://addons.mozilla.org/firefox/addon/return-youtube-dislikes/), and [LeechBlock NG](https://addons.mozilla.org/firefox/addon/leechblock-ng/).
 
 **Add tools and new browsing features**: Add new features to a taskboard, or generate QR code images from URLs, hyperlinks, or page text. With flexible UI options and the power of the [WebExtensions APIs](/en-US/docs/Mozilla/Add-ons/WebExtensions) you can easily add new features to a browser. And, you can enhance almost any website's features or functionality, it doesn't have to be your website.
 
 ![QR code generator add-on example](qr_code_image_generator_add_on.png)
 
-Examples: [Swimlanes for Trello](https://addons.mozilla.org/en-US/firefox/addon/swimlanes-for-trello/) and [Tomato Clock](https://addons.mozilla.org/en-US/firefox/addon/tomato-clock/).
+Examples: [Worldwide Radio](https://addons.mozilla.org/firefox/addon/worldwide-radio/), [Flagfox](https://addons.mozilla.org/firefox/addon/flagfox/), and [Tomato Clock](https://addons.mozilla.org/en-US/firefox/addon/tomato-clock/).
 
 **Games**: Offer traditional computer games with off-line play features, or explore new game possibilities; for example, by incorporating gameplay into everyday browsing.
 
-Examples: [Solitaire Card Game](https://addons.mozilla.org/en-US/firefox/addon/solitaire-spider-freecell/), and [2048 Prime](https://addons.mozilla.org/en-US/firefox/addon/2048-prime/).
+Examples: [RPG Game - Dedalium by Loycom Games](https://addons.mozilla.org/firefox/addon/rpg-game-online-dedalium/), [Solitaire Card Game](https://addons.mozilla.org/en-US/firefox/addon/solitaire-spider-freecell/), and [2048 Prime](https://addons.mozilla.org/en-US/firefox/addon/2048-prime/).
 
 **Add development tools**: You may provide web development tools as your business or have developed a useful technique or approach to web development that you want to share. Either way, you can enhance the built-in Firefox developer tools by adding a new tab to the developer toolbar.