refactor: remove term and feedback

public/locales/en/setting.json

@@ -21,9 +21,7 @@
     "license": "License",
     "about": "About",
     "api_doc": "API Document",
-    "version": "About Version",
-    "terms": "Terms & Privacy",
-    "feedback": "Feedback"
+    "version": "Version"
   },
   "channel": {
     "leave": "Leave Channel",

public/locales/jp/setting.json

@@ -18,9 +18,7 @@
     "license": "ライセンス",
     "about": "このアプリについて",
     "api_doc": "APIドキュメント",
-    "version": "About Version",
-    "terms": "プライバシーに関する説明",
-    "feedback": "フィードバック"
+    "version": "Version"
   },
   "channel": {
     "leave": "チャンネルを離れる",

public/locales/zh/setting.json

@@ -20,9 +20,7 @@
     "license": "证书",
     "about": "关于",
     "api_doc": "API 文档",
-    "version": "版本信息",
-    "terms": "隐私声明",
-    "feedback": "反馈"
+    "version": "版本信息"
   },
   "channel": {
     "leave": "离开",