TriggerMenuMT: remove sequence wrappers for Electron and Photon
Remove the legacy sequence wrappers for electron and photons chains. At the same time performed some minor naming cleanups:
- Use "...SequenceCfg" instead of "...MenuSequenceCfg"
- Remove the optional
name
argument where it's not used and hard-code "Electron" or "Photon"
No changes in menu or job config observed.
Relates to ATR-28792. cc @tbold @fpastore @eegidiop @efurtado @dbakshig
P.S.: There is a lot of code duplication in the egamma menu code between electron/photon and noGSF/GSF. This should be cleaned up by experts in a follow-up MR.