[PATCH] tracing: Remove redundant variable ret

[Hyeonggon Yoo]

This variable saves return value of event_hist_trigger_func,
but it's never read. So it's redundant.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
---
 kernel/trace/trace_events_hist.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index c1abd63f1d6c..414f2727d7a7 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -5225,12 +5225,11 @@ static void unregister_field_var_hists(struct hist_trigger_data *hist_data)
 	struct trace_event_file *file;
 	unsigned int i;
 	char *cmd;
-	int ret;
 
 	for (i = 0; i < hist_data->n_field_var_hists; i++) {
 		file = hist_data->field_var_hists[i]->hist_data->event_file;
 		cmd = hist_data->field_var_hists[i]->cmd;
-		ret = event_hist_trigger_func(&trigger_hist_cmd, file,
+		event_hist_trigger_func(&trigger_hist_cmd, file,
 					      "!hist", "hist", cmd);
 	}
 }
-- 
2.25.1