remove duplicate entries in en.json

Signed-off-by: Andrey Shovkoplyas <motor4ik@gmail.com>

translations/en.json

@@ -192,7 +192,6 @@
     "public-chat": "Public chat",
     "description": "Description",
     "devices": "Devices",
-    "learn-more": "Learn more",
     "pair": "Pair devices",
     "pair-this-device": "Advertise device",
     "pair-this-device-description": "Pair your devices to sync contacts and chats between them",
@@ -281,7 +280,6 @@
     "currency-display-name-mzn": "Mozambique Metical",
     "block": "Block",
     "wallet-set-up-title": "Set up your wallet",
-    "loading": "Loading... ",
     "empty-chat-description": "There are no messages \nin this chat yet",
     "empty-chat-description-public": "It's been quiet here for the last {{quiet-hours}}. Start the conversation or ",
     "quiet-hours": "{{quiet-hours}} hours",