More bib cleanup (#4118) #38

Job	Run time
doctest (1.10, ubuntu-latest)	34m 2s
doctest (1.11-nightly, ubuntu-latest)	31m 16s
test (1.6, short, ubuntu-latest)	1h 41m 36s
doctest (nightly, ubuntu-latest)	30m 7s
test (1.6, long, ubuntu-latest)	58m 3s
doctest (1.10, ubuntu-latest, depwarn=error)	36m 13s
test (1.10, short, ubuntu-latest)	1h 10m 49s
test (1.10, long, ubuntu-latest)	47m 33s
doctest (1.10, macOS, RPTU)	0s
test (1.11-nightly, short, ubuntu-latest)	1h 23m 54s
test (1.11-nightly, long, ubuntu-latest)	54m 56s
test (nightly, short, ubuntu-latest)	1h 20m 38s
test (nightly, long, ubuntu-latest)	52m 19s
test (1.10, short, ubuntu-latest, depwarn=error)	1h 12m 57s
test (1.10, long, ubuntu-latest, depwarn=error)	48m 0s
test (1.10, short, macOS, RPTU)	0s
test (1.10, long, macOS, RPTU)	0s
test (1.10, book, ubuntu-latest)	54m 48s
	14h 17m 11s

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