[BUGFIX] RootlineUtility uses backticks which leads to crashing dbal

In some queries backticks are used to generate the WHERE clause. Those
backticks lead to an error when using dbal. Therefore they have to be
removed.

Change-Id: If6aa29f73fda93cfc122af51201730cc6475a8c1
Fixes: #43168
Release: 6.0
Reviewed-on: http://review.typo3.org/16629
Reviewed-by: Philipp Gampe
Tested-by: Philipp Gampe
Reviewed-by: Wouter Wolters
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel