[PATCH 0/5] tracing: Revmoe absolute timestamp logic and interface

[sunliming]

Commit efe6196a6bc5 ("ring-buffer: Allow ring_buffer_event_time_stamp() to
return time stamp of all events") make ring_buffer_event_time_stamp() have
the ability to return time stamp of all events. The hist trigger had
also switch to the new logic to get time_stamp. The absolute timestamp
logic had bocome useless, so it showed be removed.