BI Migration - How to restrict users from using 3.X Analyzer without removing 3.X version tools

Hi,

We have recently migrated from 3.X to 7.0 BEx.

I would like to know, How can we restrict user from using 3.X version & allow only 7.0 tools.

We don't want to remove the 3.X tools from user laptop/machine.

Thanks in advance,

Avinash.