Changes to Delete an activation

added the new optional query request parameter environmentId

the message response property's minLength was decreased from 1 to 0 for the response status 404

the message response property's minLength was decreased from 1 to 0 for the response status 409

the message response property's minLength was decreased from 1 to 0 for the response status 429

the message response property's minLength was decreased from 1 to 0 for the response status 500

api operation id delete/v3/activations/{id} removed and replaced with DeleteActivation