With Xcode 13 and later, notarization via command-line has come down to these 2 basically:
Submitting your app to the Apple App Store is somewhat “straightforward”, however, if you want to export your app to list it on a 3rd party app store or sell it directly to your customers then you have to notarize your app.
If you go to Xcode > File > Swift Packages, you can see options to add a new Swift package, update them, reset caches, and resolve package versions. However, you do not see an option to remove a particular Swift package.