How do I turn off, disable or remove the "map light" located on the rearview mirror on a 2006 HHR?

Does anyone have any idea how to turn off, disable or remove the bulb of the "map light" located on the rearview mirror on a 2006 HHR Chevy.  This light just stays on all the time, drives a person nuts.  Can't seem to figure out how to "stop" it from being on all the time.
Any help, advise and/or suggestions would be GREATLY appreciated!