Remove Electron ECIDS config from BPHY18
Follow up to !67344 (merged) which enabled ECIDS in central EGamma config.
Fixes BPHY18 ART test https://bigpanda.cern.ch//media/filebrowser/055aebd9-4a60-4a7d-9495-8469b1f334c0/group.art/tarball_PandaJob_6033478469_INFN-CNAF/log.Derivation
22:55:05 BPHY18Kernel ERROR SG::ExcStoreLocked: Attempted to modify auxiliary data in a locked store: `::DFCommonElectronsECIDS' (911)