Remove cd w/ abbreviations #10715

Job	Run time
plugins (windows-latest)	6m 8s
fmt-clippy (windows-latest, default)	8m 44s
plugins (macos-latest)	3m 22s
tests (windows-latest, default)	12m 13s
fmt-clippy (windows-latest, extra)	5m 19s
plugins (ubuntu-20.04)	1m 9s
tests (macos-latest, default)	7m 26s
fmt-clippy (macos-latest, default)	3m 25s
fmt-clippy (macos-latest, extra)	2m 53s
tests (ubuntu-20.04, default)	7m 18s
fmt-clippy (ubuntu-20.04, default)	1m 29s
std-lib-and-python-virtualenv (ubuntu-20.04, py)	3m 34s
tests (ubuntu-20.04, dataframe)	9m 0s
fmt-clippy (ubuntu-20.04, dataframe)	3m 25s
std-lib-and-python-virtualenv (macos-latest, py)	5m 7s
tests (ubuntu-20.04, extra)	5m 29s
std-lib-and-python-virtualenv (windows-latest, py)	10m 49s
fmt-clippy (ubuntu-20.04, extra)	1m 52s
	1h 38m 42s

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