List of deprecated item from SharePoint 2016.

1) Stsadm.exe

2) Tags & Notes

3) SharePoint Foundation

4) ForeFront Identity Manager Client

5) Stand Alone Installation

No SharePoint Designer

No new version of SharePoint designer, but we can still use SharePoint Designer 2013 with SharePoint Server 2016.

No SharePoint Foundation

There will be no SharePoint Foundation in SharePoint 2016. That means no more free SharePoint version. 

No SQL Express

SharePoint will not install SQL express anymore. SharePoint will just install only SharePoint components. 

NO ForeFront Identity Manager or FIM 

In 2016, you don’t have the FIM option anymore. The only option is AD import, which can’t be customized and of course you can’t write back anything to AD.

No STSADM 

As per Microsoft STSADM officially deprecated Now.  

No Excel services 

Excel service is now part of Office Online Server 2016.

Duet Enterprise for Microsoft SharePoint

Duet Enterprise for Microsoft SharePoint and SAP cannot be deployed with SharePoint Server 2016. SharePoint Server 2016 doesn't have any Duet components, so it will not install.

If you want to deploy Duet Enterprise for Microsoft SharePoint you must use SharePoint Server 2013 Enterprise Edition.

Standalone Install mode

SharePoint Server 2016 doesn't support the standalone install option, so it is no longer available in the setup program. 

Tags and Notes

The Tags and Notes feature is deprecated in SharePoint Server 2016. This means that users can still create new tags and notes and access any existing ones. 

Work Management Service Application

The Work Management Service Application has been removed from SharePoint Server 2016. The My Tasks and associated Exchange Task Sync features have also been removed from SharePoint Server 2016. Both of these features required the Work Management Service Application.