[REM] crm: so long mail.thread access rules

Thanks to ksa 87d53140

addons/crm/security/ir.model.access.csv

@@ -9,7 +9,6 @@ access_res_partner_manager,res.partner.crm.manager,base.model_res_partner,sales_
 access_res_partner_category_manager,res.partner.category.crm.manager,base.model_res_partner_category,sales_team.group_sale_manager,1,0,0,0
 access_res_partner,res.partner.crm.user,base.model_res_partner,sales_team.group_sale_salesman,1,1,1,0
 access_res_partner_category,res.partner.category.crm.user,base.model_res_partner_category,sales_team.group_sale_salesman,1,1,1,0
-mail_mailgate_thread,mail.thread,mail.model_mail_thread,sales_team.group_sale_salesman,1,1,1,1
 access_crm_lead_partner_manager,crm.lead.partner.manager,model_crm_lead,base.group_partner_manager,1,0,0,0
 access_crm_lead_tag,crm_lead_tag,model_crm_lead_tag,base.group_user,1,0,0,0
 access_crm_lead_tag_salesman,crm_lead_tag salesman,model_crm_lead_tag,sales_team.group_sale_salesman,1,1,1,0