Pylint: enable pointless-except check

This check can be enabled, there is no errors in current code, and it
should stay in that way.

Reviewed-By: Petr Spacek <pspacek@redhat.com>
Reviewed-By: Lukas Slebodnik <lslebodn@redhat.com>

pylintrc

@@ -34,7 +34,6 @@ disable=
     global-statement,
     global-variable-not-assigned,
     no-init,
-    pointless-except,
     pointless-statement,
     pointless-string-statement,
     protected-access,