cpu/intel/model_1067x: Don't try to apply MCU a second time

Applying microcode updates a second time seems to be only necessary
on newer platforms (Nehalem+) for "uncore" updates.

Change-Id: Ia2ee9c70677190ffd1a08df1101d39a14fc2c384
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/31665
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Masanori Ogino <masanori.ogino@gmail.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/cpu/intel/model_1067x/mp_init.c

@@ -87,9 +87,6 @@ static void per_cpu_smm_trigger(void)
 
 	/* Relocate the SMM handler. */
 	smm_relocate();
-
-	/* After SMM relocation a 2nd microcode load is required. */
-	intel_microcode_load_unlocked(microcode_patch);
 }
 
 static void post_mp_init(void)