Removed dependency on the old EventInfo from StauTool

StauTool has a private data member m_runNumber which is set in a couple of places inside the code, but is never been used. Removal of this data member also made it possible to remove the reference to the old EventInfo

This merge request affects 1 package:

• Reconstruction/MuonIdentification/MuGirlStau

Adding @rosati ,@wleight as watchers

added Reconstruction Tau master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-20920-2019-02-06-07-13
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST 33385]

Changes and CI look fine. Approving.

Kira (L1)

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

merged

mentioned in commit a1825c12

added sweep:ignore label