Hey SmithJez,
I am not sure if there is a procedure or a supported way on how to do it. I also think you should not empty those records. How ever there was a discussion some time ago related that the logs were not even populating and those logs are filled in a .json file. Please follow the next KB from you where maybe find the records to delete: VMware Knowledge Base
Make sure to take a Snapshot and a backup prior to doing it.