Jet hypo. Mostly config work to record chainpart index info, used to report passing jets by leg.

chainDict2jetLabel.py
	for the simple scenario only,
	maintain index in the between the square brackets of the scenario arguments. Until
	now, this has been used only to provide cut values. The index must be removed
	befor the cut values are used to intialise Condtion creation  AlgTools. This is done
	in by TreeParameterExpander_simple, which is located in treeVisitors.py

ConditionsToolSetterFastReduction.py
	use the chain part index ot set the leg paramter in the  TrigJetConditionConfig_XXX tools
	dead code removal

NodeSplitterVisitor.py
	maintain chain part index. when splitting nodes.

xAODJetCollector.h
	maintain lits of passing jets by leg label

TrigHLTJetHypoUnitTests/CMakeLists.txt
	remove obolete tests.