[FIX] l10n_pl_jpk: hide delivery date when not PL

The field l10n_pl_delivery_date should not be visible if we're not in PL.
In fact, delivery_date should have the standard behavior in Poland

closes odoo/odoo#138440

X-original-commit: 0056dcb17e212a627a83072bafd68af8e0b2c76e
Signed-off-by: Olivier Colson (oco) <oco@odoo.com>
Signed-off-by: Wala Gauthier (gawa) <gawa@odoo.com>

addons/l10n_pl/models/account_move.py

@@ -16,11 +16,3 @@ class AccountMove(models.Model):
         string='B_MPV_Prowizja',
         help="Supply of agency and other services pertaining to the transfer of a single-purpose voucher",
     )
-
-    @api.depends('country_code', 'move_type')
-    def _compute_show_delivery_date(self):
-        # EXTENDS 'account'
-        super()._compute_show_delivery_date()
-        for move in self:
-            if move.country_code == 'PL':
-                move.show_delivery_date = move.is_sale_document()