removed the resxtrictions on extincted pdfs

gstlal-inspiral/python/far.py

@@ -754,20 +754,6 @@ WHERE
 		self.noise_lr_lnpdf.array = bg_pdf_extinct
 		self.noise_lr_lnpdf.normalize()
 
-		#
-		# never allow PDFs that have had the extinction model
-		# applied to be written to disk:  on-disk files must only
-		# ever provide the original data.  forbid PDFs that have
-		# been extincted from being re-extincted.
-		#
-
-		def new_with_extinction(*args, **kwargs):
-			raise NotImplementedError("re-extincting an extincted RankingStatPDF object is forbidden")
-		self.new_with_extinction = new_with_extinction
-		def to_xml(*args, **kwargs):
-			raise NotImplementedError("writing extincted RankingStatPDF object to disk is forbidden")
-		self.to_xml = to_xml
-
 		return self