pidgin/pidgin

Remove the oscar protocol
release-2.x.y
2021-04-08, Gary Kramlich
d12f1daf83ff
Remove the oscar protocol

ICQ moved to a new protocol in 2017 and AIM was shutdown in 2017 as well.
Therefore, this code has been doing absolutely nothing for us.

Testing Done:
Compiled and ran on linux, need to test windows yet.

Reviewed at https://reviews.imfreedom.org/r/598/
#include "conversation.h"
PurpleAccount *purple_accounts_find_ext(const char *name, const char *protocol_id,
gboolean (*account_test)(const PurpleAccount *account));
PurpleAccount *purple_accounts_find_any(const char *name, const char *protocol);
PurpleAccount *purple_accounts_find_connected(const char *name, const char *protocol);