[Console] Remove some unneeded versionadded directives

Author: javiereguiluz

console.rst

@@ -59,10 +59,6 @@ command, for instance:
 Console Completion
 ~~~~~~~~~~~~~~~~~~
 
-.. versionadded:: 5.4
-
-    Console completion for Bash was introduced in Symfony 5.4.
-
 If you are using the Bash shell, you can install Symfony's completion
 script to get auto completion when typing commands in the terminal. All
 commands support name and option completion, and some can even complete

console/input.rst

@@ -307,10 +307,6 @@ The above code can be simplified as follows because ``false !== null``::
 Adding Argument/Option Value Completion
 ---------------------------------------
 
-.. versionadded:: 5.4
-
-    Console completion was introduced in Symfony 5.4.
-
 If :ref:`Console completion is installed <console-completion-setup>`,
 command and option names will be auto completed by the shell. However, you
 can also implement value completion for the input in your commands. For