tmuxp: Drop the tmux pane for IRC

The channels we care about everyday, #gstreamer and #pipewire are now
on matrix so no need to log into IRC any more. Ideally we prefer IRC
but the nick name conflict is a PITA and matrix has it's own can of
worms with encryption and absence of clients which support different
domains.

tmuxp/.config/tmuxp/personal.yaml

@@ -12,10 +12,6 @@ windows:
       - shell_command:
           - vimpc
       -
-  - window_name: IRC
-    panes:
-      - shell_command:
-          - tiny irccloud
   - window_name: RSS
     panes:
       - shell_command: