[TASK] Remove todo chapter of the scheduler manual

The todos are done in forge and should be removed from a public
documentation. Furthermore the link to the former project gabrial
does not work anymore.

Change-Id: Ibd1e6c20b1e0f49121e05ec847d15a4a00797b99
Resolves: #72723
Releases: master
Reviewed-on: https://review.typo3.org/45929


Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Ludwig Rafelsberger <ludwig.rafelsberger@gmx.at>
Tested-by: Ludwig Rafelsberger <ludwig.rafelsberger@gmx.at>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>

typo3/sysext/scheduler/Documentation/Index.rst

@@ -61,7 +61,6 @@ a GNU/GPL CMS/Framework available from `www.typo3.org
    Administration/Index
    DevelopersGuide/Index
    KnownProblems/Index
-   To-doList/Index
    AppendixA/Index
    Targets
 

typo3/sysext/scheduler/Documentation/To-doList/Index.rst

-.. ==================================================
-.. FOR YOUR INFORMATION
-.. --------------------------------------------------
-.. -*- coding: utf-8 -*- with BOM.
-
-.. include:: ../Includes.txt
-
-
-
-.. _to-do-list:
-
-To-Do list
-----------
-
-Here are a few ideas for possible evolutions:
-
-- check the possibility to use ``\TYPO3\CMS\Core\Locking\Locker`` instead of serialized
-  executions to mark running tasks;
-
-- use TCEform to render the edit form, instead of custom code;
-
-- provide a way to register tasks automatically when an extension
-  providing a task class is installed;
-
-- deliver the Scheduler with more tasks, in particular some of the cron
-  scripts from the TYPO3 Core.
-
-Feature ideas or wishes can be entered into the Scheduler bug tracker
-(http://forge.typo3.org/projects/typo3v4-gabriel/issues/).
-
-