[TASK] Remove t3lib_div::intInRange()

The method is scheduled for deletion in 6.0 but was still used in the core.
The patch adapts the usages and removes intInRange.

Change-Id: Id4724c566f61c5a7238ea29be6f385bdc99d8876
Resolves: #36029
Releases: 6.0
Reviewed-on: http://review.typo3.org/10454
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn