Actually Deluxe has everything Premier has. All the Desktop programs have all the same forms. You just get more help in the higher versions. To use the Premier License Code you would have to uninstall Deluxe and start new, but I don't think you can delete all the parts .
How to uninstall from Windows
https://ttlc.intuit.com/turbotax-support/en-us/help-article/diagnostics/forcefully-uninstall-turbota...
