pidgin/pidgin

Remove a whole bunch of dead and unused code from gtkconv.c

2022-04-10, Gary Kramlich
21185b889103
Remove a whole bunch of dead and unused code from gtkconv.c

Testing Done:
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Reviewed at https://reviews.imfreedom.org/r/1380/
syntax: glob
.*.swp
.DS_Store
.flatpak-builder
*.pyc
*~
\#*\#
syntax: regexp
^build(.+)?\/
win32-install-dir(\.release)?
po\/pidgin\.pot$
^subprojects\/.+\/