pidgin/pidgin

4dc757d5f295
Remove PidginAddBuddyDialog as it is no longer used

Testing Done:
Used Turtle Power!

Reviewed at https://reviews.imfreedom.org/r/2919/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in