improve: remove fabric8 daily build #5178

Job	Run time
check_format_and_unit_tests	46s
build / Special integration tests (17)	1m 45s
build / Special integration tests (24)	1m 40s
build / Special integration tests (21)	1m 41s
build / httpclient-tests (jdk) / Integration tests (24, 1.32.0, jdk)	22m 19s
build / httpclient-tests (vertx) / Integration tests (24, 1.32.0, vertx)	22m 22s
build / httpclient-tests (jetty) / Integration tests (24, 1.32.0, jetty)	22m 19s
build / integration_tests (21, 1.31.8) / Integration tests (21, 1.31.8, vertx)	23m 9s
build / integration_tests (24, 1.32.4) / Integration tests (24, 1.32.4, vertx)	22m 16s
build / integration_tests (21, 1.33.0) / Integration tests (21, 1.33.0, vertx)	24m 9s
build / integration_tests (24, 1.33.0) / Integration tests (24, 1.33.0, vertx)	22m 42s
build / integration_tests (17, 1.33.0) / Integration tests (17, 1.33.0, vertx)	23m 52s
build / integration_tests (21, 1.32.4) / Integration tests (21, 1.32.4, vertx)	22m 17s
build / integration_tests (17, 1.30.12) / Integration tests (17, 1.30.12, vertx)	22m 32s
build / integration_tests (17, 1.31.8) / Integration tests (17, 1.31.8, vertx)	23m 24s
build / integration_tests (24, 1.31.8) / Integration tests (24, 1.31.8, vertx)	22m 35s
build / integration_tests (24, 1.30.12) / Integration tests (24, 1.30.12, vertx)	21m 51s
build / integration_tests (17, 1.32.4) / Integration tests (17, 1.32.4, vertx)	22m 54s
build / integration_tests (21, 1.30.12) / Integration tests (21, 1.30.12, vertx)	21m 49s
	5h 46m 22s

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