Merge branch '4.3' into 4.4

* 4.3:
  Removed old versionadded directive
  Use versionadded instead of note directive

Author: OskarStark

components/cache/adapters/chain_adapter.rst

@@ -58,11 +58,5 @@ incompatible adapters are silently ignored::
         new FilesystemAdapter(),  // DOES implement PruneableInterface
     ]);
 
-    // prune will proxy the call to FilesystemAdapter while silently skipping ApcuAdapter
+    // prune will proxy the call to FilesystemAdapter while silently skip ApcuAdapter
     $cache->prune();
-
-.. note::
-
-    Since Symfony 3.4, this adapter implements :class:`Symfony\\Component\\Cache\\PruneableInterface`,
-    allowing for manual :ref:`pruning of expired cache entries <component-cache-cache-pool-prune>` by
-    calling its ``prune()`` method.