mb/amd/samba: Drop board leftover

lippert/hurricane-lx doesn't exist anymore (see Change-Id: I87e3963).

Change-Id: I6d1c3a846c5bbb5fdc74178d0cf8a3cdaae1a010
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39076
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/amd/samba/board_info.txt

@@ -1,8 +0,0 @@
-Category: half
-Board name: Samba
-Board URL: http://www.amd.com/Documents/40631a_epic_rdk_pb.pdf
-ROM package: SOIC8
-ROM protocol: SPI
-ROM socketed: n
-Flashrom support: n
-Clone of: lippert/hurricane-lx