code: def delete_subnet(context, id):
      
      LOG.info("delete_subnet %s for tenant %s" % (id, context.tenant_id))
      with context.session.begin():
          subnet = db_api.subnet_find(context, id=id, scope=db_api.ONE)
          if not subnet:
              raise n_exc.SubnetNotFound(subnet_id=id)
  
          if not context.is_admin:
              if STRATEGY.is_provider_network(subnet.network_id):
                  if subnet.tenant_id == context.tenant_id:
                      # A tenant can't delete subnets on provider network
                      raise n_exc.NotAuthorized(subnet_id=id)
                  else:
                      # Raise a NotFound here because the foreign tenant
                      # does not have to know about other tenant's subnet
                      # existence.
                      raise n_exc.SubnetNotFound(subnet_id=id)
  
          _delete_subnet(context, subnet)
docs: Delete a subnet.
  
      : param context: neutron api request context
      : param id: UUID representing the subnet to delete.