How do you remove wiper blades on a 2004 Toyota Camry?

I presume you are wanting to change to wiper blade assembly and not just the rubber wiper blade. I change them out once a year with ANCOs purchased at where else? Walmart. Look at where the wiper assembly fits into the arm.[ The crook.] The assembly has a tab that pushes in to release it. The assembly will slid out of the crook. The new one simply slides in and locks. It is much simpler today than in the past when each manufacturer had something different.