code: public PartnerUserService delete(long partnerId, long accountId, long userId)
      {
          HTTP.DELETE(String.format("/v2/partners/%d/accounts/%d/users/%d", partnerId, accountId, userId));       
          return this;
      }
docs: Deletes the user with the given id.
  @param partnerId The id of the partner the user belongs to
  @param accountId The id of the account for the user
  @param userId The id of the user to delete
  @return This object