Friendship bracelet traits, yes...
Here's the trait for each bracelet:
- trait_Hidden_FriendshipBracelet_1 - Repeating pink hearts
- trait_Hidden_FriendshipBracelet_2 - Pastel orange, blue, and white diagonal stripes
- trait_Hidden_FriendshipBracelet_3 - Gray, blue, and white diamond pattern
- trait_Hidden_FriendshipBracelet_4 - Rainbow chevron pattern
- trait_Hidden_FriendshipBracelet_5 - White and various shades of gray chevron pattern
So, your sims' trait to remove is trait_Hidden_FriendshipBracelet_4.