chore: delete i18n on matrix

Author: Procrustes5

.github/workflows/ci.yml

@@ -44,7 +44,6 @@ jobs:
         flag-for-router: ['', '--router']
         flag-for-pinia: ['', '--pinia']
         flag-for-vitest: ['', '--vitest']
-        flag-for-i18n: ['']
 
         # It's quite costly to install Cypress & Playwright even with cache.
         # Maybe we can split them into another job so that all the projects