The attribute Exception.message is no longer available in Python 3, and
newer versions of pylint check for this and raise an error during
test_lint, with this commit we take care of these codesites in the
following manner:
* For test_convert, the access was in a function that is effectively
dead code, and thus it has been removed.
With this, we can upgrade pylint to the newest version and fix a
longstanding bug with MRO building in pylint.
closesodoo/odoo#57921
X-original-commit: 6a989445fdda811f854003a62fd564061d088963
Signed-off-by: Adrian Torres (adt) <adt@odoo.com>