pidgin/pidgin

Remove now-unused PurpleXferUiOps.destroy.

2019-12-22, Elliott Sales de Andrade
d26ef8ea193f
Remove now-unused PurpleXferUiOps.destroy.

UI data is stored on GObjects and automatically destroyed, so this isn't
really needed as a UI op for *our* UIs. There will be a replacement soon
if needed by other UIs.
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