How do I delete iTunes from my MacBook Pro
To delete iTunes Music:
Your iTunes Music is stored in a Music Library. The default location is in the Music Folder in Finder.
If you don't know where the Music folder is, open Finder and click Go &gt; Home and open the folder Music.
You can delete this entire folder. It will offer to create a new blank Library next time you open iTunes. You will lose all the music, of course, when you delete this folder.
Music/iTunes Application
On macOS Sierra you can delete iTunes, but I'd recommend against it. You would likely have to disable security features. Remember that Music is just a few hundred megabytes - less than 0.08% of even the smallest hard drives.