[IMP] test_lint: add no-dupe-class-members rule

closes odoo/odoo#77719

X-original-commit: 591a94f6278abf51b114fd43870874c6ea8364ab
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

addons/point_of_sale/static/tests/tours/helpers/PaymentScreenTourMethods.js

@@ -36,14 +36,6 @@ odoo.define('point_of_sale.tour.PaymentScreenTourMethods', function (require) {
             ];
         }
 
-        clickTipButton() {
-            return [
-                {
-                    trigger: `.payment-buttons .js_tip`,
-                },
-            ];
-        }
-
         clickInvoiceButton() {
             return [{ content: 'click invoice button', trigger: '.payment-buttons .js_invoice' }];
         }

odoo/addons/test_lint/tests/test_eslint.py

@@ -13,7 +13,8 @@ RULES = ('{'
         '"no-undef": "error",'
         '"no-restricted-globals": ["error", "event", "self"],'
         '"no-const-assign": ["error"],'
-        '"no-debugger": ["error"]'
+        '"no-debugger": ["error"],'
+        '"no-dupe-class-members": ["error"]'
         '}'
 )
 PARSER_OPTIONS = '{ecmaVersion: 2019, sourceType: module}'