Remove switch that controls thermostat
This might be the furnace emergency shut-off switch. That switch plate should look like the illustration below, and be mounted much higher on the wall than a regular light switch.



Check with the condo management... It would likely be a fire code violation to remove it, in that case!

However, it might be a "vacation" switch, which could be removed... But again, check with the condo management, since they surely have rules about what is allowed.