Fix lint error

Author: minggangw

lib/action/client.js

@@ -523,7 +523,7 @@ class ActionClient extends Entity {
     // Best-effort remove every goal ID still in the native filter so that
     // the subscription reverts to an unfiltered state and future feedback
     // is not silently dropped.
-    for (const [uuid, goalIdBuf] of this._filterGoalIdBuffers) {
+    for (const [, goalIdBuf] of this._filterGoalIdBuffers) {
       try {
         rclnodejs.actionConfigureFeedbackSubFilterRemoveGoalId(
           this.handle,