code: async def delete(cls, access_key: str):
          
          q = 'mutation($access_key: String!) {' \
              '  delete_keypair(access_key: $access_key) {' \
              '    ok msg' \
              '  }' \
              '}'
          variables = {
              'access_key': access_key,
          }
          rqst = Request(cls.session, 'POST', '/admin/graphql')
          rqst.set_json({
              'query': q,
              'variables': variables,
          })
          async with rqst.fetch() as resp:
              data = await resp.json()
              return data['delete_keypair']
docs: Deletes an existing keypair with given ACCESSKEY.