x86/mpx: remove selftests themselves

From: Dave Hansen <dave.hansen@linux.intel.com>

MPX is being removed from the kernel due to a lack of support
in the toolchain going forward (gcc).

Remove the x86 selftests since they have been causing some
issues because of their propensity to do some debug-aiding
tracepoint mucking.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: x86@kernel.org
Cc: Andy Lutomirski <luto@kernel.org>
5 files changed