Reduction of egammaValidation histograms related to TruthElectronHistograms which were empty.

Frued Erik Brarenrequested to merge
frbraren/athena:21.0-remove-empty-electron-plots into 21.0

Reduction of egammaValidation histograms related to TruthElectronHistograms which were empty. Related to MRs !43687 (closed) and !43621 (merged) . @dboerner

Edited by Frued Erik Braren

Merge request reports