Don't worry,
jenniparks. I believe that DL will bring Ginger Ale and tomato juice back fairly soon. A transcript of an FA conference call was posted here a week or two back.
PS: I was on an ATL-SLC flight the day it was officially removed. Everyone kept asking for it, but the FA's nicely explained they no longer serve it. But if you looked through the curtain, F passengers seemed to have plenty to go around