`BKE_animdata_fix_paths_remove()` now calls into the new function `animrig::legacy::action_fcurves_remove()`, which works for both legacy and slotted Actions. Also I updated the documentation of the BKE function so that it's clear what it's actually doing. No functional changes for legacy Actions. Ref: #123424 Pull Request: https://projects.blender.org/blender/blender/pulls/128252