The grocery store still has the area for the salad bar, but they use it now for shelving of featured products. They could replace it with a more efficient and standard shelving but they keep the bar along with the side rails for holding the clamshells while filling them, when that was possible. Perhaps they are hopeful that the salad bar will be open again. Another reason is that it is an ideal spot to feature products, a lot of people will look at the salad bar with recollection of a better time.