[stable/quassel] deprecating chart (#24380)

Signed-off-by: Matt Farina <matt@mattfarina.com>

stable/quassel/Chart.yaml

@@ -1,13 +1,11 @@
 apiVersion: v1
 appVersion: 0.13.1
-description: Quassel IRC is a modern, cross-platform, distributed IRC client.
+description: DEPRECATED - Quassel IRC is a modern, cross-platform, distributed IRC client.
 name: quassel
-version: 0.2.12
+version: 0.2.13
 icon: https://avatars3.githubusercontent.com/u/2965670
 home: https://quassel-irc.org/
-maintainers:
-- name: kiall
-  email: kiall@macinnes.ie
+deprecated: true
 sources:
 - https://github.com/quassel/quassel
 - https://github.com/linuxserver/docker-quassel-core

stable/quassel/OWNERS

@@ -1,2 +0,0 @@
-approvers:
-- kiall

stable/quassel/README.md

@@ -9,6 +9,10 @@ For more information, see the Helm Charts [Deprecation and Archive Notice](https
 distributed IRC client, meaning that one (or multiple) client(s) can attach to
 and detach from a central core.
 
+## DEPRECATION NOTICE
+
+This chart is deprecated and no longer supported.
+
 ## TL;DR;
 
 ```console