fix : del clock-util and add time

Author: seipan

server/utils/clock/clock.go

@@ -0,0 +1,15 @@
+package utils
+
+import (
+	"fmt"
+	"time"
+)
+
+func JSTNow() (time.Time, error) {
+	jst, err := time.LoadLocation("Asia/Tokyo")
+	if err != nil {
+		return time.Time{}, fmt.Errorf("can't get time")
+	}
+	now := time.Now().In(jst)
+	return now, nil
+}