pidgin/pidgin

Remove includes from protocol.h that weren't used there and deal with the fallout

2021-04-30, Gary Kramlich
e3397381fd35
Remove includes from protocol.h that weren't used there and deal with the fallout

Testing Done:
Compiled and ran locally. Connected with bonjour, xmpp, and irc.

Reviewed at https://reviews.imfreedom.org/r/635/
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