produce event without parse format: print(e)

event annotate format is parsed in transport module now, this means
event is only parsed by consumer thread, not producer thread.

This will make event producer more faster than before.

Use print(e) to play this new change.

So we can use a simplest tracing script now: (enable all tracepoints)
	trace '*:*' function (e) { print(e) }

Signed-off-by: Jovi Zhang <bookjovi@gmail.com>