minor #6513 remove documentation of not supported "verbose" option value (TobiasXy)

This PR was merged into the 2.3 branch.

Discussion
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remove documentation of not supported "verbose" option value

rebased version of #6492

Commits
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a658623 remove documentation of not supported "verbose" option value

Author: xabbuh

components/console/usage.rst

@@ -77,14 +77,11 @@ with:
     $ php application.php list --verbose
     $ php application.php list -v
 
-The verbose flag can optionally take a value between 1 (default) and 3 to
-output even more verbose messages:
+To output even more verbose messages you can use these options:
 
 .. code-block:: bash
 
-    $ php application.php list --verbose=2
     $ php application.php list -vv
-    $ php application.php list --verbose=3
     $ php application.php list -vvv
 
 If you set the optional arguments to give your application a name and version::