Docs/admin-guide/mm/zswap: remove a paragraph about zswap being a new feature

Nine years have passed since Linux 3.11.
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20221104122612.14906-1-david@ixit.czSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/mm/zswap.rst

@@ -14,13 +14,7 @@ for potentially reduced swap I/O.  This trade-off can also result in a
 significant performance improvement if reads from the compressed cache are
 faster than reads from a swap device.
 
-.. note::
-   Zswap is a new feature as of v3.11 and interacts heavily with memory
-   reclaim.  This interaction has not been fully explored on the large set of
-   potential configurations and workloads that exist.  For this reason, zswap
-   is a work in progress and should be considered experimental.
-
-   Some potential benefits:
+Some potential benefits:
 
 * Desktop/laptop users with limited RAM capacities can mitigate the
   performance impact of swapping.