Update translation files

Updated by "Cleanup translation files" hook in Weblate.

Translation: CryptPad/App
Translate-URL: http://weblate.cryptpad.fr/projects/cryptpad/app/

www/common/translations/messages.pt-br.json

@@ -409,7 +409,6 @@
     "fileEmbedScript": "",
     "fileEmbedTag": "",
     "ok": "",
-    "doNotAskAgain": "",
     "show_help_button": "",
     "hide_help_button": "",
     "help_button": "",