Remove openshift-ci directory #3656

Job	Run time
test-docker-build (base)	38s
integration (v1.29.8, v0.56.8)	29m 9s
test-docker-build (git)	1m 16s
e2e (v1.29.8, v0.56.8)	36m 34s
integration (v1.29.8, v0.65.1)	29m 53s
unit	3m 47s
test-docker-build (image-processing)	55s
e2e (v1.29.8, v0.65.1)	36m 30s
test-docker-build (waiter)	38s
integration (v1.31.0, v0.56.8)	29m 6s
e2e (v1.31.0, v0.56.8)	41m 49s
integration (v1.31.0, v0.65.1)	29m 38s
e2e (v1.31.0, v0.65.1)	35m 41s
	4h 35m 34s

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