perf lock: Dropping unsupported ':r' modifier

Looks to me like the :r modifier is not supported anymore, so remove it
from the list of events. Without this fix 'perf lock record' doesn't
work.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Zhu Yanhai <gaoyang.zyh@taobao.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1312035232-9534-1-git-send-email-gaoyang.zyh@taobao.com
Signed-off-by: Zhu Yanhai <gaoyang.zyh@taobao.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-lock.c

@@ -942,10 +942,10 @@ static const char *record_args[] = {
 	"-f",
 	"-m", "1024",
 	"-c", "1",
-	"-e", "lock:lock_acquire:r",
-	"-e", "lock:lock_acquired:r",
-	"-e", "lock:lock_contended:r",
-	"-e", "lock:lock_release:r",
+	"-e", "lock:lock_acquire",
+	"-e", "lock:lock_acquired",
+	"-e", "lock:lock_contended",
+	"-e", "lock:lock_release",
 };
 
 static int __cmd_record(int argc, const char **argv)