inspiral.py: iirbank snr threshold set from 5.5 to 4.0

gstlal-inspiral/python/inspiral.py

@@ -239,7 +239,7 @@ def parse_bank_files(svd_banks, verbose, snr_threshold = None):
 		raise ValueError("Could not parse bank files into valid bank dictionary.\n\t- Perhaps you are using out-of-date svd bank files?  Please ensure that they were generated with the same code version as the parsing code")
 	return banks
 
-def parse_iirbank_files(iir_banks, verbose, snr_threshold = 5.5):
+def parse_iirbank_files(iir_banks, verbose, snr_threshold = 4.0):
 	"""
 	given a dictionary of lists of iir template bank file names parse them
 	into a dictionary of bank classes