pidgin/pidgin

Remove all of the tune api

14 months ago, Gary Kramlich
cd96db566218
Remove all of the tune api

Testing Done:
Compiled, built `pidgin-pot`, and ran the unit tests.

Reviewed at https://reviews.imfreedom.org/r/2368/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in