minor #11570 remove 3.4 versionadded in 4.2 (OskarStark)

This PR was merged into the 4.2 branch.

Discussion
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remove 3.4 versionadded in 4.2

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Commits
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e31c324 remove 3.4 versionadded in 4.2

Author: OskarStark

components/var_dumper/advanced.rst

@@ -64,10 +64,6 @@ you can configure these limits:
     items will be cloned. The default value is ``1``, which is consistent
     with older Symfony versions.
 
-    .. versionadded:: 3.4
-
-        The ``setMinDepth()`` method was introduced in Symfony 3.4.
-
 :method:`Symfony\\Component\\VarDumper\\Cloner\\VarCloner::setMaxString`
     Configures the maximum number of characters that will be cloned before
     cutting overlong strings.  Specifying ``-1`` removes the limit.