pidgin/pidgin

Cleanup some things from blist theme removal

2021-02-12, Elliott Sales de Andrade
502c78a7f11f
Cleanup some things from blist theme removal

* Remove unnecessary loop over blist cell renderers.
* Remove `BGCOLOR_COLUMN`, which is always `NULL`.
* Remove redundant if conditions.
* Remove empty `` tags.
* Restore `name_color`/`status_color` difference in `pidgin_blist_get_name_markup`.

Testing Done:
Compile only.

Reviewed at https://reviews.imfreedom.org/r/499/
[Desktop Entry]
Name=Pidgin
GenericName=Internet Messenger
Comment=Chat over IM. Supports AIM, Google Talk, Jabber/XMPP, and more
Exec=purple3-url-handler %u
TryExec=purple3-url-handler
Icon=pidgin
StartupNotify=false
Terminal=false
NoDisplay=true
Type=Application
Categories=Network;InstantMessaging;RemoteAccess;ConsoleOnly;
MimeType=x-scheme-handler/aim;x-scheme-handler/gg;x-scheme-handler/icq;x-scheme-handler/irc;x-scheme-handler/msnim;x-scheme-handler/sip;x-scheme-handler/xmpp;x-scheme-handler/ymsgr
@USES_MM_CHAT_SECTION@