mb/intel/wtm2: Remove duplicated HAVE_SMI_HANDLER

HAVE_SMI_HANDLER already selected in broadwell/Kconfig file.

Change-Id: Ic40b5296eae78cd83c59212042d94424251524b1
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/30484
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/mainboard/intel/wtm2/Kconfig

@@ -7,7 +7,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_ACPI_TABLES
 	select HAVE_OPTION_TABLE
 	select HAVE_ACPI_RESUME
-	select HAVE_SMI_HANDLER
 	select MAINBOARD_HAS_CHROMEOS
 	select MAINBOARD_HAS_LPC_TPM
 	select INTEL_INT15