Remove unncessary std::lock_guard in SiDetElementsRoadMaker_xk.cxx (ATLASRECTS-4781)

Remove unncessary std::lock_guard in SiDetElementsRoadMaker_xk.cxx.

https://its.cern.ch/jira/browse/ATLASRECTS-4781

RunTier0Tests.py was fine. RunTier0Tests.log

This merge request affects 1 package:

• InnerDetector/InDetRecTools/SiDetElementsRoadTool_xk

added InnerDetector master review-pending-level-1 labels

changed the description

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-22508-2019-04-09-07-03
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST 36733]

Hi,

looks good, approving.

Cheers, Tomas (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 99d50da7

added sweep:ignore label