pidgin/pidgin

Remove registration of all stock icons

2021-10-12, Elliott Sales de Andrade
e0b11d28b39e
Remove registration of all stock icons

There's still a few things in `pidginstock.[ch]` that we need, but we definitely don't need the stock icons.

Testing Done:
Compile only

Reviewed at https://reviews.imfreedom.org/r/1042/
if ENABLE_DOC
subdir('reference')
endif
if ENABLE_GTK
pidgin_man = configure_file(
input : 'pidgin3.1.in',
output : 'pidgin3.1',
configuration : man_conf,
install : true,
install_dir : get_option('mandir') / 'man1')
endif
if enable_consoleui
finch_man = configure_file(
input : 'finch3.1.in',
output : 'finch3.1',
configuration : man_conf,
install : true,
install_dir : get_option('mandir') / 'man1')
endif