Remove legacy locale file

config/locales/en.yml

@@ -1,21 +0,0 @@
-en:
-  language: 'English (US)'
-  views:
-    locale:
-      languages: "Languages"
-    actions:
-      list: "Manage list memberships"
-    sessions:
-      destroy: "Logout"
-      create: "Sign in"
-      new: "Sign up"
-    navigation:
-      timeline: "Timeline"
-      inbox: "Inbox"
-      discover: "Discover"
-      notifications: "Notifications"
-      show: "View profile"
-      settings: "Settings"
-      admin: "Kontrollzentrum"
-      sidekiq: "Sidekiq"
-      moderation: "Moderation Panel"