You do not need to do anything – just ignore those log entries. BPS log files are automatically zipped and emailed to you. The BPS Security Log is just like a Server log. It logs information for troubleshooting, diagnostics and just general stuff. Log files are log files so unless you are troubleshooting something in particular then log entries are just log entries and nothing more needs to be done with, to or about them.
The Security Log alerts can be turned On or Off on the S-Monitor page so if the real question is “how to not be alerted about this” then the answer is to turn of Security Log alerts.