[FIX] account_payment: remove typo from uninstall hook

A typo in the uninstall hook of the account_payment module tries to access a
non-existing field, resulting in an error during module removal.

The uninstall hook was introduced by commit [1], however the bug was actually
introduced by commit [2] including a rename of the field being accessed.

[1]: https://github.com/odoo/odoo/commit/61b8c0c1a2be6e7966413bf3c60b4475ae0e9a94
[2]: https://github.com/odoo/odoo/commit/f7b8f07501315233c8208e99b311935815039a3a

closes odoo/odoo#100907

X-original-commit: ffb7411cb800fccd9fc8dd2d9a183850bdb46347
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>

addons/account_payment/__init__.py

@@ -21,6 +21,6 @@ def uninstall_hook(cr, registry):
     env = api.Environment(cr, SUPERUSER_ID, {})
     installed_providers = env['payment.provider'].search([('module_id.state', '=', 'installed')])
     env['account.payment.method'].search([
-        ('code', 'in', installed_providers.mapped('provider')),
+        ('code', 'in', installed_providers.mapped('code')),
         ('payment_type', '=', 'inbound'),
     ]).unlink()