src: Remove unused 'include <lib.h>'

Change-Id: Iad5540e791075270453a136a058823c28647f93a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41245
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-by: Wim Vervoorn <wvervoorn@eltan.com>

src/security/intel/stm/StmPlatformSmm.c

@@ -9,7 +9,6 @@
 
 #include <cbfs.h>
 #include <console/console.h>
-#include <lib.h>
 #include <stdint.h>
 #include <arch/rom_segs.h>