mb/gigabyte/ga-945gcm-s2c,skl: Drop HAVE_MP_TABLE

The weak implementation of write_smp_table() is not useful
without DRIVERS_GENERIC_IOAPIC and related entries in
devicetree.cb. No interrupt routing entries are present
in the generated MP table.

Change-Id: I71a209e95ae1fe8c1c90b61c6ac0fb0e7bcc7eca
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69490
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/gigabyte/ga-945gcm-s2l/Kconfig

@@ -11,7 +11,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select SUPERIO_ITE_IT8718F
 	select HAVE_OPTION_TABLE
 	select HAVE_CMOS_DEFAULT
-	select HAVE_MP_TABLE
 	select HAVE_ACPI_TABLES
 	select HAVE_ACPI_RESUME
 	select BOARD_ROMSIZE_KB_512