remove galaxy-tool-util from build dependency #1976

Job	Run time
No leftovers	5m 29s
build_test_container	9m 43s
CWL conformance (v1.0, docker)	7m 20s
CWL conformance (v1.0, singularity)	7m 25s
CWL conformance (v1.0, podman)	7m 27s
cwltool release test	7m 24s
Test on macos-latest	6m 29s
CWL conformance (v1.1, docker)	9m 0s
Linters (lintreadme)	46s
CWL conformance (v1.1, singularity)	9m 46s
Linters (shellcheck)	14s
Tox (3, 8, lint)	28s
CWL conformance (v1.1, podman)	9m 7s
Linters (pydocstyle)	19s
Tox (3, 8, unit)	51s
CWL conformance (v1.2, docker)	11m 51s
Tox (3, 8, bandit)	30s
CWL conformance (v1.2, singularity)	11m 38s
Tox (3, 8, mypy)	40s
CWL conformance (v1.2, podman)	11m 37s
Tox (3, 9, lint)	1s
CWL conformance (v1.2, docker, --fast-parser)	11m 32s
Tox (3, 9, unit)	1s
Tox (3, 9, bandit)	1s
Tox (3, 9, mypy)	1s
Tox (3, 10, lint)	31s
Tox (3, 10, unit)	6m 45s
Tox (3, 10, bandit)	28s
Tox (3, 10, mypy)	7m 9s
Tox (3, 11, lint)	24s
Tox (3, 11, unit)	6m 14s
Tox (3, 11, bandit)	28s
Tox (3, 11, mypy)	6m 49s
Tox (3, 12, lint)	33s
Tox (3, 12, unit)	2m 36s
Tox (3, 12, bandit)	34s
Tox (3, 12, mypy)	5m 27s
	2h 47m 38s

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