perf intel-pt: Get rid of intel_pt_use_buffer_pid_tid()

With the new way sampling support will be implemented,
intel_pt_use_buffer_pid_tid() will not be needed. Get rid of it.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1520431349-30689-7-git-send-email-adrian.hunter@intel.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>