[FIX] pos_mercury: don't show amount due in payment method popup

This popup shows in the rare situation where somebody has 2 payment
methods that use Mercury. It allows them to choose which one to use
when swiping a card.

It would show the amount due in the title of the popup however this
isn't correct when a "pending swipe" payment line has been added.

Fix it by removing this amount, it's clear what will be paid from the
information on the payment screen. Also use this opportunity to make
it translatable.

opw-2006596

closes odoo/odoo#34398

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/pos_mercury/i18n/pos_mercury.pot

@@ -360,6 +360,13 @@ msgstr ""
 msgid "Password of the merchant to authenticate him on the payment provider server"
 msgstr ""
 
+#. module: pos_mercury
+#. openerp-web
+#: code:addons/pos_mercury/static/src/js/pos_mercury.js:512
+#, python-format
+msgid "Pay with: "
+msgstr ""
+
 #. module: pos_mercury
 #: model:ir.model.fields,help:pos_mercury.field_account_bank_statement_line__mercury_record_no
 msgid "Payment record number from Mercury Pay"

addons/pos_mercury/static/src/js/pos_mercury.js

@@ -509,7 +509,7 @@ PaymentScreenWidget.include({
             self.credit_code_transaction(parsed_result);
         } else { // this is for supporting another payment system like mercury
             this.gui.show_popup('selection',{
-                title:   'Pay ' + this.pos.get_order().get_due().toFixed(2) + ' with : ',
+                title:   _t('Pay with: '),
                 list:    online_payment_journals,
                 confirm: function (item) {
                     parsed_result.journal_id = item;