pidgin/pidgin

Remove some unused headers from pidginprefs.c that don't exist in gtk4

2022-02-24, Gary Kramlich
8d642098b453
Remove some unused headers from pidginprefs.c that don't exist in gtk4

Testing Done:
Compiled with and without VV enabled and verified there were no errors.

Reviewed at https://reviews.imfreedom.org/r/1308/
syntax: glob
.*.swp
.DS_Store
.flatpak-builder
*.pyc
*~
\#*\#
syntax: regexp
^build(.+)?\/
win32-install-dir(\.release)?
po\/pidgin\.pot$
^subprojects\/.+\/