Don't import `pretty_errors` #8357

Job	Run time
check-md-links / markdown-link-check	20s
check-code / mypy	2m 41s
check-schema / schema	12s
check-package / init-store	5s
check-package / pkg-build (ubuntu-latest)	21s
check-package / pkg-check (ubuntu-22.04, 3.8)	1m 10s
check-package / pkg-check (ubuntu-22.04, 3.11)	5m 56s
check-package / pkg-check (macos-12, 3.8)	1m 26s
check-package / pkg-check (macos-12, 3.11)	1m 38s
check-package / pkg-check (windows-2022, 3.8)	3m 48s
check-package / pkg-check (windows-2022, 3.11)	3m 50s
check-package / pkg-guardian	1s
	21m 28s

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