Deletion of invalid FreeText fields

[Jill Meyer]

Since OTRS3.0 some freetext fields (TicketFreeText7 - TicketFreeText9) used by ITSM module in the past have been disabled.
We did not / do not use the ITSM module, my question now is if can I delete these disabled freetext fields (dynamic fields) without a risk to destroy anything inside the system?

Same question for all the disabled TicketFreeKey fields

Thanks,
Jill