Let's assume an editable list with a row containing only readonly
fields. Before this rev., if the user clicked on this row and then
pressed TAB, it crashed. The crash occurred in historical code that
now seems to be useless, so we simply removed it.
closesodoo/odoo#34696
Signed-off-by: Julien Mougenot (JUM) <Arcasias@users.noreply.github.com>