The law is quite specific and well settled in this respect. The easement can only be extinguished either by agreement or if the two properties (the one having the benefit and the one having the burden) come into common ownership.
You have no alternative but to negotiate with the utility company to see if they will release this. If they want, then you are not able to get it done and even a court application will fail I’m sorry to have to tell you.
An easement does not fall into disuse or get extinguished regardless of whether it’s no longer needed or there is an alternative audit simply hasn’t been used for a period of years, however long
Can I clarify anything for you?