pidgin/pidgin

remove gntlog.c and pidginlog.c from the documentation as the files were removed

Testing Done:
Build the docs successfully.

Reviewed at https://reviews.imfreedom.org/r/1065/
syntax: glob
.*.swp
.DS_Store
.flatpak-builder
*.pyc
*~
\#*\#
syntax: regexp
^build(.+)?\/
win32-install-dir(\.release)?
po\/pidgin\.pot$
^subprojects\/.+\/