Doc: Removed Twitter links

Assets/WebsiteAssets/templates/partials/socialFeeds.mustache

@@ -1,7 +1,6 @@
 <div class="row">
 	<div class="col-12 col-md-12 social-links">
 		<a class="social-link-bluesky" href="https://bsky.app/profile/joplinapp.bsky.social" title="Joplin Bluesky feed"><i class="fa-brands fa-bluesky"></i></a>
-		<a class="social-link-twitter" href="https://twitter.com/joplinapp" title="Joplin Twitter feed"><i class="fab fa-twitter"></i></a>
 		<a class="social-link-mastodon" href="https://mastodon.social/@joplinapp" title="Joplin Mastodon feed"><i class="fab fa-mastodon"></i></a>
 		<a class="social-link-patreon" href="https://www.patreon.com/joplin" title="Joplin Patreon"><i class="fab fa-patreon"></i></a>
 		<a class="social-link-discord" href="https://discord.gg/VSj7AFHvpq" title="Joplin Discord chat"><i class="fab fa-discord"></i></a>

Assets/WebsiteAssets/templates/partials/twitterLink.mustache

@@ -1,3 +1 @@
-<!-- <a href="https://twitter.com/joplinapp" title="Joplin Twitter feed" class="fw500 twitter-link"><i class="fab fa-twitter"></i></a> -->
-
 <a href="https://bsky.app/profile/joplinapp.bsky.social" title="Joplin Bluesky feed" class="fw500 twitter-link"><i class="fa-brands fa-bluesky"></i></a>

README.md

@@ -51,7 +51,6 @@ Name | Description
 --- | ---
 [Support Forum](https://discourse.joplinapp.org/) | This is the main place for general discussion about Joplin, user support, software development questions, and to discuss new features. Also where the latest beta versions are released and discussed.
 [Bluesky feed](https://bsky.app/profile/joplinapp.bsky.social) | Follow us on Bluesky
-[Twitter feed](https://twitter.com/joplinapp) | Follow us on Twitter
 [Mastodon feed](https://mastodon.social/@joplinapp) | Follow us on Mastodon
 [Patreon page](https://www.patreon.com/joplin) |The latest news are often posted there
 [Discord server](https://discord.gg/VSj7AFHvpq) | Our chat server

packages/doc-builder/docusaurus.config.js

@@ -248,10 +248,6 @@ const config = {
 								label: 'Bluesky',
 								href: 'https://bsky.app/profile/joplinapp.bsky.social',
 							},
-							{
-								label: 'Twitter',
-								href: 'https://twitter.com/joplinapp',
-							},
 							{
 								label: 'Patreon',
 								href: 'https://www.patreon.com/joplin',