L1CaloFEXSim: Fix clang warnings.

Missing override keywords. Unused private data members.

Jenkins please retry a build

This merge request affects 1 package:

• Trigger/TrigT1/L1CaloFEX/L1CaloFEXSim

Adding @kwhalen ,@afaulkne as watchers

added Trigger master review-pending-level-1 labels

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

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

CI Result SUCCESS (hash ae301c48)

	Athena	AthSimulation	AthGeneration	AnalysisBase
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
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 20175]

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

merged

mentioned in commit 8002c585

added sweep:ignore label