x86: remove export for smp_call_function_mask.

with this removal, exports for both i386 and x86_64,
regarding the "smp_call_function" series are now the same.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 file changed