Remove further obsolete stuff (#992) #3583

Job	Run time
create_nuget	1m 9s
build_and_test (gitlab/gitlab-ee:17.1.8-ee.0, Release)	20m 40s
build_and_test (gitlab/gitlab-ee:16.11.10-ee.0, Release)	24m 46s
deploy	11s
	46m 46s

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