MuonSimEventAthenaPool: Fix compilation warning.

Compilation warning: reference to obsolete Gaudi header.

This merge request affects 1 package:

• MuonSpectrometer/MuonCnv/MuonSimEventAthenaPool

Adding @rosati ,@wleight as watchers

added MuonSpectrometer Simulation master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-21216-2019-02-17-09-48
Athena: number of compilation errors 0, warnings 4
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST 33989]

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

merged

mentioned in commit 6d528e23

added sweep:ignore label