Don't require separate invitation endpoint

week_5/exercise_5/README.md

@@ -45,11 +45,6 @@ Watch Party group chats. It should support the following methods:
   `chat_id`and a `session_token` to allow the original creator to identify
   themselves in subsequent requests. All session tokens should expire within 6
   hours.
-- `POST /<chat_id>/invite`: Take `chat_id` as a URL param and require that
-  chat's creator's `session_token` in an authorization header.  Generate a
-  "magic link" that, when visited, loads the Watch Party web application,
-  prompts the new user for a username and authenticates them by giving them a
-  `session_token`, and displays the chat's page.
 - `GET /<chat_id>`: Require a valid `session_token` in an authorization header.
   Return the messages in the chat. Optionally take a parameter that allows it to
   return only new messages.