Once the reflector is removed you can remove the bulb, If you have the patience then work away at the epoxy bonding the bulb into the housing until you have freed the bulb. Now remove the positive terminal from the housing.
If you do not have the patience then cover bulb with a cloth and SMASH it with a pair of pliers, now use a drill with a 6mm bit drill out the rest of the bulb. You should be left with a housing clean of the old bulb and any epoxy, check your LED for fit at this point. If the hole needs enlarging do this with a drill or Dremel and stone point.