I have been trying to do this and finally found a solution as there was continuous request from Business user’s.
How to Disable the SmartView Add-In in the Microsoft Office Outlook Permanently ?
To Fix follow below steps –
1. Take the Backup of the Windows Registry
2. Launch Windows Registry Editor
3. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\
4. Delete the Key Hyperion.CommonAddin