Further synchronisation with analysis tools

Remove H/E electron selection to be consistent with analysis tools.  Though this selection (is thought to be...) obsolete as it is used by the mva ID.

Also synchronise cleaned jet selection.  Only clean jets if there is exactly one signal lepton in the event, which is what is done in the analysis tools.  This should not change the final number of events passing the full selection, but may change results when looking at individual cuts.