refactor: use `hipo::getBanklistIndex` to get bank indices #920

Job	Run time
Linux (minver) / Download test data	3s
Linux (minver) / Build Minver Ruby	14s
Linux (minver) / Build ROOT	15s
Linux (minver) / Build HIPO (noROOT)	1m 8s
Linux (minver) / Build HIPO (withROOT)	1m 20s
Linux (minver) / Iguana (cpp)	5m 2s
Linux (minver) / Iguana (noROOT)	1m 33s
Linux (minver) / Iguana (python)	5m 49s
Linux (minver) / Iguana (fortran)	2m 53s
Linux (minver) / Final	1s
Linux (minver) / Collect webpages	0s
Linux (minver) / Deploy webpages	0s
Issue bot	0s
	18m 18s

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