I am not sure I understand correctly. Do you want to delete all versions that were created during development, so that they don't appear when the site hits public?
While there is no such feature, you can always delete the unnecessary information through MSSQL Management Studio.
If you want to disable history, you can follow the process described in the User Manual: Working With Web Pages/Page History.
On a side note, you have probably seen the Kb Article How to reduce the project database size
All the best,
the Telerik team