Are you looking for the Visual Studio "Biztalk Server" extension? The extension contains the tools to create Biztalk artifacts for differetn versions of Biztalk Server in different version of Visual Studio. I was able to uninstall old versions of Visual Studio that were required with the old Biztalk SDKs.
Search for Biztalk in the Visual Studio Manage Extensions form.
https://marketplace.visualstudio.com/items?itemName=ms-biztalk.BizTalk