Deleting Bulk Upload Logfiles?

I need to delete logfiles from the Bulk Upload Log but don’t know how.
I use $this->kalturaClient->bulk->listAction($bulkUploadFilter, $pager); to get the collection and it works just fine. No problem with kalturaClient.
I tried the $this->kalturaClient->bulk->abort(ID) but it doesn’t remove the logfile, only aborts the jobs(import/convert etc) if any. I need to remove the logfile completely.