[TASK] Verify compatiblity with TYPO3 6.2

Removed old includes and increase compatibility range.

Resolves: #59407
Releases: 1.8
Change-Id: Iec68eee17f64d14fcb701204dd1f0efdc35ea343
Reviewed-on: https://review.typo3.org/30626
Reviewed-by: Francois Suter
Tested-by: Francois Suter