Update translation files

Updated by "Cleanup translation files" hook in Weblate.

Translation: Mobilizon/Frontend
Translate-URL: https://weblate.framasoft.org/projects/mobilizon/frontend/

js/src/i18n/ja.json

@@ -122,7 +122,6 @@
   "Warning": "ご注意",
   "Website": "ウェブサイト",
   "Welcome to Mobilizon, {username}!": "{username} 、Mobilizonへよこそう!",
-  "Write something…": "何を書いてください…",
   "[This comment has been deleted]": "[このコメントは削除されました]",
   "[deleted]": "[削除された]",
   "as {identity}": "{identity} として"