pidgin/pidgin

Remove the finch plugin pietray

2021-08-07, Gary Kramlich
06e3ae278b73
Remove the finch plugin pietray

It depends on the D-Bus API that we scrapped as well as GtkStatusIcon that's
been deprecated since Gtk 3.14.

Testing Done:
did a clean build and install and verified there were no issues.

Reviewed at https://reviews.imfreedom.org/r/874/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in