diff --git a/internal/util/metrics/thread.go b/internal/util/metrics/thread.go
index 23d75116e6..8ad3a4d2da 100644
--- a/internal/util/metrics/thread.go
+++ b/internal/util/metrics/thread.go
@@ -17,7 +17,6 @@
 package metrics
 
 import (
-	"context"
 	"os"
 	"sync"
 	"time"
@@ -56,7 +55,6 @@ func (thw *threadWatcher) Start() {
 }
 
 func (thw *threadWatcher) watchThreadNum() {
-	log := log.Ctx(context.TODO())
 	ticker := time.NewTicker(time.Second * 30)
 	defer ticker.Stop()
 	pid := os.Getpid()