code: function deleteOrganizationAttachedPolicy (params, cb) {
        let promise = null
        if (typeof cb !== 'function') [promise, cb] = asyncify()
  
        const { id, policyId, instance } = params
        const tasks = [
          (job, next) => {
            Joi.validate({ id, policyId, instance }, validationRules.deleteOrganizationPolicy, (err) => {
              if (err) return next(Boom.badRequest(err))
              next()
            })
          },
          (job, next) => {
            job.id = id
            job.policyId = policyId
            job.instance = instance
  
            next()
          },
          checkOrg,
          clearOrganizationAttachedPolicy
        ]
  
        db.withTransaction(tasks, (err, res) => {
          if (err) return cb(err)
  
          organizationOps.readById(id, cb)
        })
  
        return promise
      }
docs: Remove one organization policy
  
  @param  {Object}   params { id, policyId, instance } "instance" optional
  @param  {Function} cb