[FIX] crm: remove lead kanban view
[FIX] crm: remove lead kanban view

Since the crm refactoring in V9, the stages doesn't make sense anymore on a lead,
as this step is only to validate an opportunity. We should remove this view as it
is confusing in this case : If I create a stage on the opportunity form view,
it appears also on the lead kanban view. Other side effects can also be encountered.

Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,microcom/odoo,hip-odoo/odoo,bplancher/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,laslabs/odoo,ygol/odoo,sysadminmatmoz/OCB,microcom/odoo,bplancher/odoo,sysadminmatmoz/OCB,dfang/odoo,laslabs/odoo,microcom/odoo,dfang/odoo,microcom/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,microcom/odoo,microcom/odoo,bplancher/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,hip-odoo/odoo,laslabs/odoo,dfang/odoo,storm-computers/odoo,ygol/odoo,storm-computers/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,storm-computers/odoo,ygol/odoo,ygol/odoo,laslabs/odoo,ygol/odoo,bplancher/odoo,storm-computers/odoo,bplancher/odoo,laslabs/odoo,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,laslabs/odoo,storm-computers/odoo,ygol/odoo,sysadminmatmoz/OCB,storm-computers/odoo,bplancher/odoo,dfang/odoo,dfang/odoo,hip-odoo/odoo,sysadminmatmoz/OCB