staging: unisys: remove unused macros from visorchipset.h

Delete the macros and related preprocessor code for DBG_GETFILE_PAYLOAD(),
DBG_GETFILE(), and DBG_PUTFILE().

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>