Consider removing all Exception Handlers in favor of the LogWriter

[christophlehmann]

With https://review.typo3.org/c/Packages/TYPO3.CMS/+/83499 Exception handlers in v13 now show the request id as public tracable error information.

When the request id arrives in Sentry as tag for filtering, we then could drop the option "showEventId". Still left is the option "disableDatabaseLogging"

[cweiske]

Please take into consideration that exceptions may have a parent exception set. Those will not be visible anymore when logging messages only.