i18n: remove key reference

locales/de-DE.json

@@ -25,7 +25,7 @@
     "profile": "Profil"
   },
   "title": {
-    "federated_timeline": "@:nav_side.federated @:timeline.name",
-    "local_timeline": "@:nav_side.local @:timeline.name"
+    "federated_timeline": "Förderierte Timeline",
+    "local_timeline": "Lokale Timeline"
   }
 }

locales/en-US.json

@@ -78,12 +78,11 @@
     "posts_with_replies": "Posts & Replies"
   },
   "timeline": {
-    "name": "Timeline",
     "show_new_items": "Show {0} new items"
   },
   "title": {
-    "federated_timeline": "@:nav_side.federated @:timeline.name",
-    "local_timeline": "@:nav_side.local @:timeline.name"
+    "federated_timeline": "Federated Timeline",
+    "local_timeline": "Local Timeline"
   },
   "tooltip": {
     "add_content_warning": "Add content warning",

locales/zh-CN.json

@@ -78,12 +78,11 @@
     "posts_with_replies": "帖文与留言"
   },
   "timeline": {
-    "name": "时间线",
     "show_new_items": "展示 {0} 条新帖文"
   },
   "title": {
-    "federated_timeline": "@:nav_side.federated@:timeline.name",
-    "local_timeline": "@:nav_side.local@:timeline.name"
+    "federated_timeline": "跨站时间线",
+    "local_timeline": "本地时间线"
   },
   "tooltip": {
     "add_content_warning": "添加内容警告标识",