staging: r8188eu: remove more dead code from ODM_Write_DIG()

SupportICType is ODM_RTL8188E in this driver. Remove code that is
never executed.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210918181904.12000-7-straube.linux@gmail.com


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