Chicago police officers accused of shooting a firefighter without justification may not tell jurors that the city is covering the man’s medical bills, a federal judge held today.In a written opinion, U.S. District Judge John Z. Lee acknowledged the city has agreed to indemnify the officers for any actual damages Chicago firefighter Philip A. Giuffre is awarded.The officers contend the city has already paid $524,000 of Giuffre’s medical expenses through its self-funded employee health insurance plan.But Giuffre …