how to uninstall refinery plugin

Question

I have been working with refinery cms for a website and was trying to create a gallery with the portfolio plugin. I decided another plugin would work better but now I am stuck with the databases and a portfolio page on my menu that I cannot delete. What is the best way to uninstall a plugin? Here are the commands I have tried:

rm -rf vendor/plugins/refinerycms_portfolio

bundle exec gem uninstall refinerycms-portfolio

They seem to have uninstalled some things but the portfolio tab is still on the menu and throws an error when I click it.