This is likely coming from an app you have installed! Do you recall using any other translation apps?
Would you be able to share your store's URL so I can look into this further for you?
I found from your website that you were previously using below app for translation and then you have uninstalled it. Please contact that app developers to completely remove code from your theme.
App : Translation Lab ‑ AI Translate
Link : https://apps.shopify.com/content-translation