Well Houdini I don't know why they discontinue things, but I'm always told at places that they've done their research.  Possibly it was not a very popular item, even though 2 people here loved it.

For example, I used to get the Tuna Olga everytime I went to Olgas.  Either that or I'd get soup and salad.  For YEARS I got Tuna.  One day the menu changed and tuna was gone.  I asked and they told me it was actually one of their least popular menu items.  I guess it was only popular to me b/c I don't eat meat!  Oh well, I love the soup and salad so I survived that day, but now every time I'm in the mood for a Tuna Olga i frown a little :(