diff --git a/addons/mail/models/mail_mail.py b/addons/mail/models/mail_mail.py
index 4ad711e09c6..aecb32cb5ac 100644
--- a/addons/mail/models/mail_mail.py
+++ b/addons/mail/models/mail_mail.py
@@ -74,7 +74,7 @@ class MailMail(models.Model):
     def default_get(self, fields):
         # protection for `default_type` values leaking from menu action context (e.g. for invoices)
         # To remove when automatic context propagation is removed in web client
-        if self._context.get('default_type') not in self._all_columns['message_type'].column.selection:
+        if self._context.get('default_type') not in type(self).message_type.base_field.selection:
             self = self.with_context(dict(self._context, default_type=None))
         return super(MailMail, self).default_get(fields)
 
diff --git a/openerp/models.py b/openerp/models.py
index ddcc720ecbb..582f4e66a65 100644
--- a/openerp/models.py
+++ b/openerp/models.py
@@ -2987,20 +2987,6 @@ class BaseModel(object):
             for name, source in parent._inherit_fields.iteritems():
                 struct[name] = (parent_model, parent_field, source[2], source[3])
 
-    @property
-    def _all_columns(self):
-        """ Returns a dict mapping all fields names (self fields and inherited
-        field via _inherits) to a ``column_info`` object giving detailed column
-        information. This property is deprecated, use ``_fields`` instead.
-        """
-        result = {}
-        # do not inverse for loops, since local fields may hide inherited ones!
-        for k, (parent, m2o, col, original_parent) in self._inherit_fields.iteritems():
-            result[k] = fields.column_info(k, col, parent, m2o, original_parent)
-        for k, col in self._columns.iteritems():
-            result[k] = fields.column_info(k, col)
-        return result
-
     @api.model
     def _inherits_check(self):
         for table, field_name in self._inherits.items():
diff --git a/openerp/osv/fields.py b/openerp/osv/fields.py
index 8275efa4b4a..d4db13ba953 100644
--- a/openerp/osv/fields.py
+++ b/openerp/osv/fields.py
@@ -1814,46 +1814,3 @@ class property(function):
             fnct_search=self._property_search,
             **args
         )
-
-
-class column_info(object):
-    """ Struct containing details about an osv column, either one local to
-        its model, or one inherited via _inherits.
-
-        .. attribute:: name
-
-            name of the column
-
-        .. attribute:: column
-
-            column instance, subclass of :class:`_column`
-
-        .. attribute:: parent_model
-
-            if the column is inherited, name of the model that contains it,
-            ``None`` for local columns.
-
-        .. attribute:: parent_column
-
-            the name of the column containing the m2o relationship to the
-            parent model that contains this column, ``None`` for local columns.
-
-        .. attribute:: original_parent
-
-            if the column is inherited, name of the original parent model that
-            contains it i.e in case of multilevel inheritance, ``None`` for
-            local columns.
-    """
-    __slots__ = ['name', 'column', 'parent_model', 'parent_column', 'original_parent']
-
-    def __init__(self, name, column, parent_model=None, parent_column=None, original_parent=None):
-        self.name = name
-        self.column = column
-        self.parent_model = parent_model
-        self.parent_column = parent_column
-        self.original_parent = original_parent
-
-    def __str__(self):
-        return '%s(%s, %s, %s, %s, %s)' % (
-            self.__class__.__name__, self.name, self.column,
-            self.parent_model, self.parent_column, self.original_parent)