Fixes regression introduced by the pop'n music controller support PR.
When modifying the axis direction combo box in the Configure Binding
group, the modified binding's info would get deleted and replaced by the
next binding's info. This results in incorrect info being passed to
BindCommand().
This commit reverts the incorrect code so the binding info is backed up
before deletion takes place, therefore ensuring the correct info is
passed to BindCommand().
FlatOutPS2
896730ceda