[FIX] l10n_in: remove required
[FIX] l10n_in: remove required

- Purpose of this task is to remove required attribute on HSN field because that is not more required.
- before applied this commit if set up an indian company, we have an error if we edit a product because of HSN field is required.

Related Task: 1948171

closes odoo/odoo#32077

Signed-off-by: Jérémy Kersten (jke) <56923a0c9ca793c07ff1df1013de5694062a27a6@openerp.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo