remove coa detection directory

coa_detection/AbfData.py

coa_detection/CoaExampleDb.py

coa_detection/GracefulKiller.py

coa_detection/ReadManager.py

coa_detection/ReadTable.py

coa_detection/__main__.py

coa_detection/build_coa_db.py

coa_detection/coa_argparse_dicts.py

coa_detection/compile_coa_model.py

coa_detection/in_silico_mixture.py

coa_detection/run_inference.py

coa_detection/train_coa_nn.py