Draft: disable TRT NN PID for electron and remove it from the EDM

as discussed in ATR-25224 the calculation of NN PID in egamma is not useful - disabled now. Removed also eProbabilityNN from TrackParticleAuxContainer#HLT_IDTrack_Electron_IDTrigAux and TrackParticleAuxContainer#HLT_IDTrack_Electron_GSFAux (unrelated to this merge request but it should be disabled by an earlier MR by @christos). I assume it should be safe as no data was recorded with it - adding @rbielski @tamartin if I missed something