Removed the versionadded directive

Author: javiereguiluz

messenger.rst

@@ -885,10 +885,6 @@ The Redis transport uses `streams`_ to queue messages.
     # Full DSN Example
     MESSENGER_TRANSPORT_DSN=redis://password@localhost:6379/messages/symfony/consumer?auto_setup=true&serializer=1&stream_max_entries=0&dbindex=0
 
-.. versionadded:: 4.4
-
-    The ``dbindex`` query parameter in Redis DSN was introduced in Symfony 4.4.
-
 To use the Redis transport, you will need the Redis PHP extension (^4.3) and
 a running Redis server (^5.0).