A will or any part thereof is revoked:
(1) By a subsequent will which revokes the prior will or part expressly or by inconsistency; or
(2) By being burned, torn, canceled, obliterated or destroyed, with the intent and for the purpose of revoking it by the testator or by another person in his presence and by his direction.
(3) The revocation of a will executed in duplicate may be accomplished by revoking one (1) of the duplicates.