remove most duplicate keys in en_EN

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/i18n/strings/en_EN.json

@@ -285,7 +285,6 @@
   "Guests can't set avatars. Please register.": "Guests can't set avatars. Please register.",
   "Guest users can't create new rooms. Please register to create room and start a chat": "Guest users can't create new rooms. Please register to create room and start a chat",
   "Guest users can't upload files. Please register to upload": "Guest users can't upload files. Please register to upload",
-  "Guests can't set avatars. Please register.": "Guests can't set avatars. Please register.",
   "Guests can't use labs features. Please register.": "Guests can't use labs features. Please register.",
   "Guests cannot join this room even if explicitly invited.": "Guests cannot join this room even if explicitly invited.",
   "had": "had",
@@ -371,7 +370,6 @@
   "Once you've followed the link it contains, click below": "Once you've followed the link it contains, click below",
   "Only people who have been invited": "Only people who have been invited",
   "Operation failed": "Operation failed",
-  "or": "or",
   "Password": "Password",
   "Passwords can't be empty": "Passwords can't be empty",
   "People": "People",
@@ -604,8 +602,6 @@
   "Encrypt room": "Encrypt room",
   "There are no visible files in this room": "There are no visible files in this room",
   "Room": "Room",
-  "Room name (optional)": "Room name (optional)",
-  "Who would you like to add to this room?": "Who would you like to add to this room?",
   "Connectivity to the server has been lost.": "Connectivity to the server has been lost.",
   "Sent messages will be stored until your connection has returned.": "Sent messages will be stored until your connection has returned.",
   "Auto-complete": "Auto-complete",