Update readme

README.md

@@ -28,19 +28,9 @@ The ways you can communicate on the project are below. Before interacting, pleas
 read through the [Code Of Conduct](CODE_OF_CONDUCT.md).
 
 * IRC: [#pixelfed](irc://chat.freenode.net/pixelfed) on irc.freenode.net
-* Matrix: [#pixelfed:matrix.org](https://matrix.to/#/#pixelfed:matrix.org)
 * Mastodon: [@pixelfed@mastodon.social](https://mastodon.social/@pixelfed)
 * E-mail: [hello@pixelfed.org](mailto:hello@pixelfed.org)
 
-### Development
-
-For more development focused communication methods, please visit the following:
-
-* IRC: [#pixelfed-dev](irc://chat.freenode.net/pixelfed-dev) on irc.freenode.net
-* Matrix: [#pixelfed-dev:matrix.org](https://matrix.to/#/#pixelfed-dev:matrix.org)
-* Mastodon: [@pixeldev@mastodon.social](https://mastodon.social/@pixeldev)
-
-
 ## Pixelfed Sponsors
 
 We would like to extend our thanks to the following sponsors for funding Pixelfed development. If you are interested in becoming a sponsor, please visit the Pixelfed [Patreon Page](https://www.patreon.com/dansup/overview)