[FIX] l10n_it_sdi_channel: remove required attr from field in view
[FIX] l10n_it_sdi_channel: remove required attr from field in view

dcorio/l10n-italy,OCA/l10n-italy,dcorio/l10n-italy,OCA/l10n-italy,OCA/l10n-italy,dcorio/l10n-italy