Once all that has been removed gently start at the bottom by removing the tabs that hold the door in place and work your way around to the top. Once you do it takes a good amount of pressure to take the door off by lifting it upwards. You can hit the bottom of the door or use steady pressure. What your fighting are metal pinchers that have clamped unto the inside sill of the door.

The photos as you can see are from the bottom/underside of the door as identified by the courtesy lights. To get a better visual of the entire door make a mental note of all the tabs that go around the door.