staging: r8188eu: remove DBG_88E call from os_dep/osdep_service.c

Remove the single DBG_88E macro call from os_dep/osdep_service.c, as it
is unreachable anyway. This gets the driver closer to the eventual
removal of DBG_88E itself.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220108005550.26264-4-phil@philpotter.co.uk


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>