It’s mentioned 3 times, “I will earn your brothers saber” and “Leia’s saber”, “she surrendered her saber to me” on Achto.
All could easily be replaced/removed.
Also “There’s something my sister would want you to have.”
There are a bunch of shots, though, that show the lightsaber close to the screen that would be hard to work around or replace, which makes me worried this might not work. But anything’s doable.