Remove guards around CPU code on which all platforms use parallel MP init code. This removes the option to disable HT siblings. Tested on Foxconn D41S. Change-Id: I89f7d514d75fe933c3a8858da37004419189674b Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/25602 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>