[FIX] crm_sms: remove unused models directory

crm_lead.py file does not exist, but models directory is not imported. We
can safely remove the init and the models directory.

Oversight of odoo/odoo@5d4208d44d9044a769a43130df94f9a4967f318e

closes odoo/odoo#105586

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

addons/crm_sms/models/__init__.py

-# -*- coding: utf-8 -*-
-# Part of Odoo. See LICENSE file for full copyright and licensing details.
-
-from . import crm_lead