minor #12596 Remove hint that redis does not support DelayStamp (alexander-schranz)

This PR was merged into the 4.4 branch.

Discussion
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Remove hint that redis does not support DelayStamp

The DelayStamp was added in 4.4 symfony/symfony#31977 so the hint can now be removed.

fixes #12595

Commits
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b98fa06 Remove hint that redis does not support DelayStamp

Author: OskarStark

messenger.rst

@@ -905,10 +905,6 @@ The Redis transport uses `streams`_ to queue messages.
 To use the Redis transport, you will need the Redis PHP extension (^4.3) and
 a running Redis server (^5.0).
 
-.. caution::
-
-    The Redis transport does not support "delayed" messages.
-
 A number of options can be configured via the DSN or via the ``options`` key
 under the transport in ``messenger.yaml``: