Cleanup swim wrapper #2040

Job	Run time
build (macos-latest)	3m 29s
java_matrix	4s
build (ubuntu-latest)	2m 50s
download_test_data	5s
unit_tests (25)	2m 52s
unit_tests (21)	2m 59s
generate_documentation	1m 3s
spotbugs	6m 28s
test_run-groovy	48s
dependency_analysis	1m 4s
test_decoder	2m 41s
test_clara	3m 53s
test_coatjava (ubuntu-latest, eb-eftpi)	1m 52s
test_coatjava (ubuntu-latest, kpp)	2m 54s
test_coatjava (ubuntu-latest, eb-eg)	1m 49s
test_coatjava (ubuntu-latest, eb-enc)	1m 55s
test_coatjava (ubuntu-latest, eb-ep)	1m 55s
test_coatjava (ubuntu-latest, eb-epc)	1m 51s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	2m 53s
release_build	0s
deploy_web_pages	0s
final	4s
	43m 29s

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