perf util: No need to call read_trace_init() in tracing_data_header()

It's useless to call the read_trace_init() function at this time as we
don't need a returned pevent and it makes me confusing. :)
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1370323231-14022-16-git-send-email-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/trace-event-info.c

@@ -476,8 +476,6 @@ static int tracing_data_header(void)
 	else
 		buf[0] = 0;
 
-	read_trace_init(buf[0], buf[0]);
-
 	if (write(output_fd, buf, 1) != 1)
 		return -1;