_removeUnusedEntries(recordingId, har) {
    const requests = this.polly._requests.filter(
      (r) =>
        r.recordingId === recordingId &&
        (r.action === ACTIONS.RECORD || r.action === ACTIONS.REPLAY)
    );

    har.log.entries = har.log.entries.filter((entry) =>
      requests.find((r) => entry._id === r.id && entry._order === r.order)
    );
  }
Remove all entries from the given HAR that do not match any requests in
the current Polly instance.

@param {String} recordingId
@param {HAR} har