spawaveform is now imported from gstlal inspead of pylal, ref: redmine #6095

gstlal-inspiral/python/cbc_template_iir.py

gstlal-inspiral/tests/iir_pipeline_test.py

gstlal-ugly/examples/configurations/PBH/scripts/plot_banks

gstlal-ugly/examples/configurations/PE/bank/chirp_cut

gstlal-ugly/examples/configurations/PE/bank/template_grid

...ly/examples/configurations/PE/interp/check_interp_matches

gstlal-ugly/examples/configurations/llsky/bank/bank_splitter