That appears to be a common threaded CFL light bulb. Just twist it out. If moderate force doesn't remove it, grab Grab it down by the base so you don't break the glass tubing, and be sure to dispose of it properly and in accordance with local regulations. Fluorescent lights tend to contain mercury.
If I'm wrong and it has some sort of pin arrangement, remove the screw visible in the images, squeeze the spring straps and lower the assembly out of the can to see it better. It should be apparent how it comes out (or that it's non-serviceable, but I've never seen a fluorescent light that was).