soc/intel: Remove unused <cpu/x86/tsc.h>

Change-Id: I322a94186b92033fc27ba97785b55df09aa317f7
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61009
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@tutanota.com>

src/soc/intel/baytrail/refcode_native.c

@@ -2,7 +2,6 @@
 
 #include <device/mmio.h>
 #include <console/console.h>
-#include <cpu/x86/tsc.h>
 #include <device/pci.h>
 #include <delay.h>
 #include <soc/pci_devs.h>