Personally, I would remove Leia’s line, “Rey. Never be afraid of who you are.”
If you remove that line would you also remove the same line from Sith Rey?
Nah, I wouldn’t. If we were going with a Rey nobody approach, having Leia say it to her implies her lineage, and not to mention, it would make Rey taking on the Skywalker name have a far greater effect and it wouldn’t feel as if she’s going against what Leia told her. Also, at that point in the film when her Dark Side self appears, it can be implied that she would be referring to Rey’s inner Dark Side, and it’s a temptation that the vision and Kylo Ren would be egging her onto.