[FrameworkBundle] Remove some unneeded versionadded directives

Author: javiereguiluz

configuration/micro_kernel_trait.rst

@@ -120,10 +120,6 @@ Next, create an ``index.php`` file that defines the kernel class and runs it:
         $response->send();
         $kernel->terminate($request, $response);
 
-.. versionadded:: 6.1
-
-    The PHP attributes notation has been introduced in Symfony 6.1.
-
 .. note::
 
     In addition to the ``index.php`` file, you'll need to create a directory called

reference/configuration/framework.rst

@@ -972,10 +972,6 @@ crypto_method
 The minimum version of TLS to accept. The value must be one of the
 ``STREAM_CRYPTO_METHOD_TLSv*_CLIENT`` constants defined by PHP.
 
-.. versionadded:: 6.3
-
-    The ``crypto_method`` option was introduced in Symfony 6.3.
-
 .. _reference-http-client-retry-delay:
 
 delay