Description:

repo-remove does not remove delta's for a package with delta's. It leaves behind a .deltas file in the database file throwing the following error when syncing the database:

Additional info:
* package version(s): pacman 5.0.1-4


Steps to reproduce:

- introduce newer versions of package with delta's to a pacman database file
- remove package (repo-remove <db> <package name>)
- The error is visible when syncing the database (error: invalid name for database entry). When extracted the database file shows a .deltas file for the removed package.

The error disappears when doing one of the following:
- re-adding the package (whatever version)
- re-adding the package followed by removing all available delta's and then removing the package.