I don’t believe you can. Only the calendar created by SuiteCRM. What you should do is just copy the entries to the SuiteCRM calendar (in google) and delete the other one.
Basically the calendar resides in SuiteCRM. If you delete the calendar from Google for example, it just get’s recreated and sync’d by SuiteCRM. Of course it is two way, but think of SuiteCRM as kind of like the master record.