[TASK] Remove t3lib_sqlengine

t3lib_sqlengine is deprecated, remove it

Change-Id: I38563832cd0a549a84a0076cc855037cded58496
Reviewed-on: http://review.typo3.org/1013


Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Xavier Perseguers <typo3@perseguers.ch>
Reviewed-by: Björn Pedersen <bjoern.pedersen@frm2.tum.de>
Reviewed-by: Steffen Kamper <info@sk-typo3.de>
Tested-by: Steffen Kamper <info@sk-typo3.de>