ISF_Algorithms: Fix clang warnings.

clang warnings: inconsistent use of override keywords.

This is a class using gmock, so just remove the existing override keywords.

This merge request affects 1 package:

• Simulation/ISF/ISF_Core/ISF_Algorithms

Adding @jchapman ,@vpascuzz as watchers

added Simulation master review-pending-level-1 labels

CI Result SUCCESS (hash 08997e7a)

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
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 7269]

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

merged

mentioned in commit 295f9868

added sweep:ignore label