I believe Flisco has a Mk1! And all P75s are Mk1. are they not? This probably goes back before the great splitting of the Punto clan, back in 2005 or so.............
The cannister is a passive emissions device-- essentially it takes up vapours from the fuel tank and passes them into the inlet manifold to be burnt.
There's no way of testing for it, however, electrically disconnecting it will throw an eml.
Leave the electrics in place, hurl the rest in the bin. Simples.