TestLArHardwareID+LArGeoH6Cryostats+LArEventTest: CxxUtils::make_unique -> std::make_unique

Get make_unique from std::.

This merge request affects 3 packages:

• LArCalorimeter/LArExample/TestLArHardwareID
• LArCalorimeter/LArGeoModel/LArGeoH6Cryostats
• LArCalorimeter/LArTest/LArEventTest

Adding @pavol as watcher

added JetEtmiss LAr master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-26411-2019-09-07-06-12
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 3068]

Clear, approving.

pavol [as L2 MR shifter]

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

merged

mentioned in commit f3bbce9b

added sweep:ignore label