Cleanup of muon development triggers

When we were developing the muon triggers for Run 3, we started by adding some test triggers that run a subset of the full muon trigger chains. Since we now have well validated full muon triggers, these development triggers can be cleaned up (ATR-22182). The following has been removed:
- the 'fast' muon chains and definition that run only the L2 SA step
- the 'Comb' chains and definition which run only the L2 SA and combined steps
- the 'ivar' chain, definition and sequence, which runs the L2 steps plus a L2 isolation (which is not currently planned to be used in standard chains)
- the combined chains that used the 'fast' muon sequence were updated to use the full single muon seqeunce

References were updated to take into account the removed/updated triggers.