soc/intel/fsp_broadwell_de/uart: Drop it

A copy of our uart8250io driver sneaked in with Broadwell-DE support.
The only difference is the lack of initialization (due to FSP handling
that).

TEST=manually compared resulting object files

Change-Id: I09be10b76c76c1306ad2c8db8fb07794dde1b0f2
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/16786
Tested-by: build bot (Jenkins)
Reviewed-by: York Yang <york.yang@intel.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
5 files changed