Multiple ALM is a feature starting with EE, were DE support only one binding for each ALM provider.
When downgrading from DCE/EE to DE, we need to make sure that it's not possible to abuse the feature, dropping extra ALM settings.
In DE, at startup:
- Drop ALM settings except the last updated one (be careful to BBC & BBS): alm_settings table
- Drop related PAT: alm_pats table
- Drop related project bindings: project_alm_settings table