Remove unused company_obj

invoice.py

@@ -186,7 +186,6 @@ class Invoice(ModelWorkflow, ModelSQL, ModelView):
         return 2
 
     def default_company(self, cursor, user, context=None):
-        company_obj = self.pool.get('company.company')
         if context is None:
             context = {}
         if context.get('company'):
@@ -1422,7 +1421,6 @@ class InvoiceLine(ModelSQL, ModelView):
         return 2
 
     def default_company(self, cursor, user, context=None):
-        company_obj = self.pool.get('company.company')
         if context is None:
             context = {}
         if context.get('company'):