Deleted Modelling/Co-culture Model/Intermittent Feeding/.gitkeep

Update Modelling/Co-culture Model/co_culture_model_version_4_1_bc_production_dependent_on_glucose.py, Modelling/Co-culture Model/co_culture_model_version_4_bc_production.py, Modelling/Co-culture Model/monoculture_model_version_1.py, Modelling/Co-culture Model/monoculture_model_version_1_1_bc_production_dependent_on_glucose.py