code simplify

context/output.go

@@ -93,7 +93,7 @@ func (output *BeegoOutput) Cookie(name string, value string, others ...interface
 
 		if maxAge > 0 {
 			fmt.Fprintf(&b, "; Expires=%s; Max-Age=%d", time.Now().Add(time.Duration(maxAge)*time.Second).UTC().Format(time.RFC1123), maxAge)
-		} else if maxAge <= 0 {
+		} else {
 			fmt.Fprintf(&b, "; Max-Age=0")
 		}
 	}