Question regarding removed buildings on farms

Some of you may of used my livestock farm and noticed that if you use it in an hilly area, you will get to squares that show where the buildings where.
I would like to know how to remove them if it is possible.

 

I have removed the code that makes the buildings show but there is still the base area showing where they would be.
I took out the following example from the class file,

Code:

<Display>
    <Model>Data/Gfx/Building/b_gemfarm02_t3.sgbin</Model>
    <Placeholder>Data/Gfx/Placeholder/b_aastock_T3.sgbin</Placeholder>
    <Fundament>
        <Use>0</Use>
        <Model>""</Model>
    </Fundament>
    <EditModeOnly>0</EditModeOnly>
</Display>

This stops the building from showing.

I'm wondering if this bit has something to do with the square left,

Code:

<EntityPosition>
    <CollisionShape>
        <Dimension>60,60</Dimension>
        <Height>19.83267021</Height>
        <Use>1</Use>
    </CollisionShape>
    <GardenAsCarpet>1</GardenAsCarpet>
</EntityPosition>