meta: Remove mpd

Although using mpd was a cute experience, I am not interested in
maintaining mpd on my systems anymore since navidrome does the job just
as well and has more useful features.

mpd/.config/mpd/mpd.conf

@@ -1,16 +0,0 @@
-# New Start: A modern Arch workflow built with an emphasis on functionality.
-# Copyright (C) 2017 Donovan Glover
-
-music_directory "~/Music"
-
-playlist_directory "~/.config/mpd/playlists"
-pid_file           "~/.config/mpd/pid"
-state_file         "~/.config/mpd/state"
-sticker_file       "~/.config/mpd/sticker.sql"
-
-audio_output {
-  type "pipewire"
-  name "PipeWire Sound Server"
-}
-
-auto_update "yes"

mpd/README.md

@@ -1,15 +0,0 @@
-# mpd
-
-[mpd][mpd] is a music player daemon.
-
-## Use Cases
-
-mpd can be used to:
-
-- Manage music independently of which client is being used
-
-You should not use mpd if:
-
-- The music player you use does not rely on mpd
-
-[mpd]: https://github.com/MusicPlayerDaemon/MPD