Quick-fix unused import warnings of generated code

[hasezoey]

This PR quick-fixes the unused import warnings for crate::diesel::* and paginate imports. The crate::diesel::* line should be removed altogether (see #94).

re https://github.com/Wulf/dsync/issues/94#issuecomment-1937836230

[longsleep]

:+1: - i like my change https://github.com/longsleep-io/dsync/commit/8f9254eb4532d3623a7d4819292944c47c47d95e slightly better but at the end it does not matter.