Adxstudio CRM 2011 Produktivity Pack in Dynamics 365

Hallo, Dear Experts,

We have currently the Dynamics 365 on premise.  In the solution settings, i can see a managed solution called "Adxstudio CRM 2011 Productivity Pack". This tool is unsupported now according to the following announcement:

https://support.microsoft.com/en-us/help/3165165/legacy-adxstudio-portals-and-microsoft-dynamics-365-portals-supportability

My question is:

What should we do with this tool? Can somebody give us some suggestions from his exprience?

Best Regards