those cars use anti squeel compound which adheres the pad to the caliper piston on the inside and the outer pad to the caliper frame. That causes the pad to pull away when the brakes are released. The compound makes a mess and isn't as reliable as the springs/clips at the top. Id put them back myself.I did that once, and just left them out after I couldn't find them lying around the car. I wouldn't necessarily recommend doing that, but I never had any problems. Many cars don't have those clips and seem to get along fine.