gstlal_inspiral_create_dt_dphi_snr_ratio_pdfs_dag: remove extraneous option

gstlal-inspiral/bin/gstlal_inspiral_create_dt_dphi_snr_ratio_pdfs_dag

@@ -25,7 +25,6 @@ parser.add_argument('--psd-xml', help = 'XML containing HLV psd')
 parser.add_argument('--H-snr', type = float, help = 'H characteristic SNR')
 parser.add_argument('--L-snr', type = float, help = 'L characteristic SNR')
 parser.add_argument('--V-snr', type = float, help = 'V characteristic SNR')
-parser.add_argument("--output", help = "set the output h5 file, e.g., covmat.h5")
 args = parser.parse_args()
 
 try: