Hi Kuzeth,
unfortunately seems that way, but I can point you in the right direction, you'll need to modify DialogVideoInfo.xml but it can be a quick fix or to do it properly you'll need to spend some time.
For the quick fix, look for
Code:
<texture background="true">$INFO[ListItem.Art(discart)]</texture>
and look at commenting out the relevant control images for discart.
For the proper fix, you'll want to look for the above code but also consider the following and anywhere it exists:
Code:
IsEmpty(ListItem.Art(discart) or !IsEmpty(ListItem.Art(discart)
This is basically seeing if discart exists, which it will in the lisitem if in your DB against the movie and as such is being used in a few places to control other behaviour i.e. it shortens the plot moves the spinner control for the plot etc. so that the disc can be displayed.
Up to you if you just want to remove the disc, or remove the disc and update the plot etc. so you don't have the dead space on the right when you stop to disc from showing.
Hope this helps and let me know if you need anymore info / help on it.
Mike.