FAQ: How do I access Legacy Text Templates in Premiere Pro CC 2017 (11.1)?

There is no apparent way to access and use legacy text templates in Premiere Pro CC 2017 (11.1), however, there is a workaround. You can create a project containing imported legacy text templates. Once this project is saved, you can inspect and use these templates via Media Browser in subsequent projects.

See this document for details: Steps for using legacy Title Templates in Premiere Pro CC 2017.1

Note: though you can use Legacy Text Templates in this manner, there is no longer a way to create a new Legacy Text Template.