remove unnecessary i18n file

apps/app/public/static/locales/en_US/meta.json

@@ -1,5 +0,0 @@
-{
-  "id": "en_US",
-  "displayName": "English",
-  "aliases": ["en"]
-}

apps/app/public/static/locales/ja_JP/meta.json

@@ -1,5 +0,0 @@
-{
-  "id": "ja_JP",
-  "displayName": "日本語",
-  "aliases": ["ja"]
-}

apps/app/public/static/locales/zh_CN/meta.json

@@ -1,5 +0,0 @@
-{
-	"id": "zh_CN",
-	"displayName": "简体中文",
-  "aliases": ["zh","zh-HK","zh-CN","zh-TW","zh-hk","zh-cn","zh-tw"]
-}