After you erase the list, use a property node to set the Top Left Visible Cell to 0,0. The scroll bar will still be visible, but it will be disabled.
Right-click on the list, then select Create >> Property Node.
Move the Property Node into the case where you erase the list.
Right-click on the Property Node and select Change to Write.
Right-click on the Property Node and select Properties >> Top Left Visible Cell (at least in english).
Right-click on the Property Node and select Create >> Constant. 0,0 will be the default.