I just went through this myself.
First I used a drill to get the rubber and inner sleeve out. Then I used a torch to lightly cut the outer sleeve out. I knew there had to be a better way, so I googled it and this way worked for me.
You stick a screw driver in the gap in the spring eye and hammer it in to open the gap a little. You can then pound the bushing out with a hammer and a socket that is slightly smaller than the eye. The eye closes back tight after you remove the screwdriver.
I also used this method to help get the new bushings in.
PS. This method is much easier if the springs are off the jeep.