minor #12176 Remove old versionadded directives (OskarStark)

This PR was merged into the master branch.

Discussion
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Remove old versionadded directives

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Commits
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ad98c6f Remove old versionadded directives

Author: OskarStark

components/process.rst

@@ -367,10 +367,6 @@ the PHP code::
 
     A prepared command line will not be escaped automatically!
 
-.. versionadded:: 4.4
-
-    Prepared command lines were introduced in Symfony 4.4.
-
 Process Timeout
 ---------------
 

components/yaml.rst

@@ -388,10 +388,6 @@ you can dump them as ``~`` with the ``DUMP_NULL_AS_TILDE`` flag::
     $dumped = Yaml::dump(['foo' => null], 2, 4, Yaml::DUMP_NULL_AS_TILDE);
     // foo: ~
 
-.. versionadded:: 4.4
-
-    The flag to dump ``null`` as ``~`` was introduced in Symfony 4.4.
-
 Syntax Validation
 ~~~~~~~~~~~~~~~~~
 

reference/configuration/framework.rst

@@ -933,10 +933,6 @@ max_duration
 The maximum execution time, in seconds, that the request and the response are
 allowed to take. A value lower than or equal to 0 means it is unlimited.
 
-.. versionadded:: 4.4
-
-    The ``max_duration`` option was introduced in Symfony 4.4.
-
 verify_host
 ...........
 

routing.rst

@@ -929,10 +929,6 @@ and in route imports. Symfony defines some special attributes with the same name
             ;
         };
 
-.. versionadded:: 4.3
-
-    The special attributes were introduced in Symfony 4.3.
-
 Extra Parameters
 ~~~~~~~~~~~~~~~~
 

routing/custom_route_loader.rst

@@ -216,10 +216,6 @@ implement the :class:`Symfony\\Bundle\\FrameworkBundle\\Routing\\RouteLoaderInte
 interface to be tagged automatically. If you're **not using autoconfigure**,
 tag it manually with ``routing.route_loader``.
 
-.. deprecated:: 4.4
-
-    Not tagging or implementing your route loader was deprecated in Symfony 4.4.
-
 .. note::
 
     The routes defined using service route loaders will be automatically