This was introduced in 3a5b7cf1 as way to expose
wine_call_to_16_regs_long(); however, the same commit changed the only user to
use WCB16_REGS instead.
Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>