An appeals court has ruled the Illinois Constitution doesn’t guarantee a city worker’s benefits.The 3rd District Appellate Court this week determined language protecting government pensions didn’t apply to health premiums paid for by the city of Geneseo.A unanimous panel of the Ottawa-based court wrote that Article 13, Section 5 of the state constitution, which says benefits conferred by any state or local pension system “shall not be diminished or impaired,” would not stop the city from …