[TASK] Remove leftover "draft workspace" checks

A magic draft workspace (wsid=-1) was removed during TYPO3 v4.x development
already, with custom workspaces (wsid>0) available since a long time.

Some left-over checks can safely be removed now.

Resolves: #92474
Releases: master
Change-Id: Ia38a4f0d8099673d933678f0533601c5b85bcde6
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66000


Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>