perf tools: Remove duplicated page_size definition

It's defined in util/util.c and gets set from the begining of perf run.
No need to duplicate it.
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: 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/1363173585-9754-6-git-send-email-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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

@@ -43,8 +43,6 @@
 
 #define VERSION "0.5"
 
-unsigned int page_size;
-
 static const char *output_file = "trace.info";
 static int output_fd;
 
@@ -431,7 +429,6 @@ static void tracing_data_header(void)
 	write_or_die(buf, 1);
 
 	/* save page_size */
-	page_size = sysconf(_SC_PAGESIZE);
 	write_or_die(&page_size, 4);
 }