gstlal_inspiral: adjust HTTPServers call

- rely on it retrieving the default bottle app instead of passing it

gstlal-inspiral/bin/gstlal_inspiral

@@ -583,7 +583,6 @@ for output_file_number, (svd_bank, output_filename, likelihood_namedtuple, zero_
 	# in the web server
 	#bottle.app().catchall = False
 	httpservers = httpinterface.HTTPServers(
-		bottle_app = bottle.default_app(),
 		service_name = "gstlal_inspiral",
 		service_properties = {
 			"job_tag": options.job_tag if options.job_tag is not None else "",