Breaking: #82803 - Global configuration option "content_doktypes" removed
See forge#82803
Description
The configuration option
$TYPO3_ which declared
what pages.doktypes values could contain content elements, was removed.
Impact
Using this option in custom code will lead to unexpected behaviour.
Changing this option has no effect on TYPO3 Core anymore.
Affected Installations
Installations having this option explicitly set.
Migration
Remove all usages working with this option.