Clean up use of example in tests #3495

Job	Run time
test-osx (check-py38-cover)	8m 40s
test-win (3.9)	14m 55s
test-osx (check-py310-cover)	6m 28s
test (check-whole-repo-tests)	3m 31s
test-win (3.10)	13m 36s
test-osx (check-py310-nocover)	12m 53s
test (lint)	49s
test-win (3.11)	13m 45s
test-osx (check-py310-niche)	4m 49s
test (check-format)	48s
test-win (3.11, x86)	13m 47s
test-osx (check-py311-cover)	8m 32s
test (check-coverage)	20m 21s
test (check-conjecture-coverage)	2m 33s
test (check-py38-cover)	4m 52s
test (check-py38-nocover)	6m 10s
test (check-py38-niche)	4m 0s
test (check-pypy38-cover)	5m 34s
test (check-py39-cover)	5m 0s
test (check-pypy39-cover)	6m 10s
test (check-py310-cover)	4m 34s
test (check-py310-nocover)	5m 21s
test (check-py310-niche)	3m 41s
test (check-pypy310-cover)	6m 0s
test (check-py311-cover)	4m 30s
test (check-py311-nocover)	5m 19s
test (check-py311-niche)	3m 31s
test (check-py312-cover)	5m 37s
test (check-py312-nocover)	7m 30s
test (check-py312-niche)	4m 25s
test (check-quality)	3m 13s
test (check-py39-nose)	1m 10s
test (check-py39-pytest46)	1m 58s
test (check-py39-pytest54)	2m 1s
test (check-pytest62)	1m 51s
test (check-django42)	1m 52s
test (check-django41)	1m 46s
test (check-django32)	1m 50s
test (check-pandas20)	1m 16s
test (check-pandas15)	1m 17s
test (check-pandas14)	1m 22s
test (check-pandas13)	1m 12s
test (check-pandas12)	1m 16s
test (check-pandas11)	1m 15s
test (check-py38-oldestnumpy)	1m 56s
deploy	0s
	3h 52m 56s

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