[IMP] spreadsheet: remove unused public method

The method is no longer used by the web client:
=> it should be private

See enterprise commit

closes odoo/odoo#133500

Task: 3483938
Related: odoo/enterprise#46460
Signed-off-by: Rémi Rahir (rar) <rar@odoo.com>

addons/spreadsheet/models/res_lang.py

@@ -20,7 +20,7 @@ class Lang(models.Model):
         return spreadsheet_locales
 
     @api.model
-    def get_user_spreadsheet_locale(self):
+    def _get_user_spreadsheet_locale(self):
         """Convert the odoo lang to a spreadsheet locale."""
         lang = self._lang_get(self.env.user.lang)
         return lang._odoo_lang_to_spreadsheet_locale()

addons/spreadsheet/static/tests/utils/mock_server.js

@@ -1,7 +1,6 @@
 /** @odoo-module */
 
 import { registry } from "@web/core/registry";
-import { constants } from "@odoo/o-spreadsheet";
 
 registry
     .category("mock_server")
@@ -29,7 +28,4 @@ registry
             position: "after",
             decimalPlaces: 2,
         };
-    })
-    .add("res.lang/get_user_spreadsheet_locale", function (route, args) {
-        return constants.DEFAULT_LOCALE;
     });