Cleaned up macros.py, deleted dead code
Cleaned up macros.py, deleted dead code

d-fan/pysb,spgarbet/pysb,neurord/pysb,spgarbet/pysb,LoLab-VU/pysb,d-fan/pysb,johnbachman/pysb,jmuhlich/pysb,alubbock/pysb-legacy,alubbock/pysb-legacy,spgarbet/pysb,johnbachman/pysb,LoLab-VU/pysb,pysb/pysb,alubbock/pysb-legacy,neurord/pysb,d-fan/pysb,alubbock/pysb,alubbock/pysb-legacy,neurord/pysb