Delete packaging/solus directory

Removing Solus build.  Will bring this back in future when I have more time.

packaging/solus/package.yml

@@ -1,33 +0,0 @@
-name       : zoitechat
-version    : 2.18.0~pre2
-release    : 2
-source     :
-    - https://github.com/ZoiteChat/zoitechat/archive/e060d57baee1be22bee1f9c3b047be3fa71c6d35.tar.gz : ed315a0b1c46e798912fd830d3845427972857c43ccaa16284969c6f542add38
-homepage   : https://zoitechat.zoite.net/
-license    : GPL-2.0-only
-component  : network.irc
-summary    : HexChat-based IRC client
-description: |
-    ZoiteChat is a HexChat-based IRC client for Windows and UNIX-like systems.
-builddeps  :
-    - pkgconfig(glib-2.0)
-    - pkgconfig(gmodule-2.0)
-    - pkgconfig(gtk+-3.0)
-    - pkgconfig(ayatana-appindicator3-0.1)
-    - pkgconfig(dbus-glib-1)
-    - pkgconfig(libcanberra)
-    - pkgconfig(openssl)
-    - pkgconfig(iso-codes)
-    - meson
-    - ninja
-    - pkgconf
-    - gcc
-    - gettext
-setup      : |
-    %meson_configure \
-        -Dgtk-frontend=true \
-        -Dinstall-appdata=true
-build      : |
-    %ninja_build
-install    : |
-    %ninja_install