Cleanup swim wrapper #2047

Job	Run time
java_matrix	4s
build (ubuntu-latest)	2m 41s
build (macos-latest)	2m 26s
download_test_data	4s
unit_tests (25)	2m 43s
unit_tests (21)	2m 50s
test_decoder	2m 12s
test_clara	3m 49s
dependency_analysis	1m 2s
test_run-groovy	29s
spotbugs	6m 39s
test_coatjava (ubuntu-latest, eb-ep)	1m 57s
test_coatjava (ubuntu-latest, eb-eg)	2m 34s
test_coatjava (ubuntu-latest, eb-enc)	1m 50s
test_coatjava (ubuntu-latest, eb-epc)	1m 53s
test_coatjava (ubuntu-latest, kpp)	2m 59s
test_coatjava (ubuntu-latest, eb-eftpi)	2m 32s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	3m 46s
release_build	0s
generate_documentation	1m 6s
deploy_web_pages	0s
final	3s
	43m 39s

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