[TASK] Clipboard: Use new modal confirmation dialog for "Delete Elements"

Clipboard: Use new modal confirmation dialog for the menu item
"Delete Elements"

Resolves: #72350
Releases: master, 7.6
Change-Id: Icb4a9c428802af4bc09152010b264c1c02b2eb74
Reviewed-on: https://review.typo3.org/45997


Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>