pidgin/pidgin

Remove more unused Windows wrapper parts

2021-02-13, Elliott Sales de Andrade
83ce555aeb47
Remove more unused Windows wrapper parts

Remove unused Windows gettimeofday wrapper defines.
Remove struct definitions for removed `ioctl` wrapper.

Testing Done:
Compile only.

Reviewed at https://reviews.imfreedom.org/r/506/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in