Merge branch '455343-ai-impact-cleanup' into 'master'

Cleanup code for AI impact dashboard

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/149317



Merged-by: Lukas 'ai-pi' Eipert <leipert@gitlab.com>
Approved-by: Minahil Nichols <minahilnichols@gitlab.com>
Approved-by: Lukas 'ai-pi' Eipert <leipert@gitlab.com>
Co-authored-by: Alex Pennells <apennells@gitlab.com>