**Backport:** https://codeberg.org/forgejo/forgejo/pulls/10662
- create the modules/testimport/import.go to centralize blank import needed for tests (in order to run the init() function) to simplify maintenance
- remove the imports that are not needed
Co-authored-by: limiting-factor <limiting-factor@posteo.com>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/10672
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>
Co-committed-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>