pidgin/pidgin

Now that the History API is here, remove the purple logging api

2021-10-23, Gary Kramlich
3c1574216aed
Now that the History API is here, remove the purple logging api

Testing Done:
Sent ims in both pidgin3 and finch3, also joined a chat in pidgin3 and verified that the preferences window is okay.

Reviewed at https://reviews.imfreedom.org/r/1077/
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