configure: remove glib_subprocess check

This should have been removed as part of commit
692fbdf9f4c6f6bafd0b3a4d4f94973effd3bbae.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed