You cannot swap out Bloodline spells (CRB 190) using the usual method for changing your spells:
Swapping Spells In Your Repertoire
As you gain new spells in your spell repertoire, you might want to replace some of the spells you previously learned. [...] This spell can be a cantrip, but you can't swap out bloodline spells
Adapted Cantrip seems different:
Choose one cantrip from a magical tradition other than your own. If you have a spell repertoire [...], replace one of the cantrips you know [...] with the chosen spell.
Can I use this feat to circumvent the limitation, and take something useful instead of the awful Bloodline cantrip?
Edit 2022-09-10: I just realized the Bloodline Spells are your Focus Spells. So I want to swap out Granted Spells, which is not forbidden.
However, I guess the developers meant Granted Spells in the Swapping sections, as those are the cantrips and slotted spells you could at least theoretically swap.