I wouldn't worry about it. It's done.
As part of your routine maintenance, simply do a 'Disk Clean-Up' to eliminate old system rubbish ...
I update OS/drivers prior to a clean up, and run multiple scans for bad stuff --- then I run a clone of the 'clean' drive as a backup to an external drive in case of a 'catastrophic' event.
I likely clean out 5-6GB of 'stuff' each month .. but that would be dependent upon your own computing habits and tasks -- the number of updates you do, software installations and driver updates. All of which pile up restore points.