Remove helm jobs #431

Job	Run time
Clean up generated files	46s
Images	1m 42s
Clusters	2m 13s
Compilation	1m 0s
Build multi-arch images	4m 10s
Clean up clusters	1m 45s
E2E	3m 3s
Deployment (operator)	3m 17s
Deployment (globalnet, operator)	3m 24s
Multiple gateways support	1m 46s
Post mortem	3m 22s
Deployment (air-gap)	3m 51s
Unit tests	2m 24s
Deployment (air-gap, globalnet)	3m 5s
Deployment (air-gap, lighthouse)	4m 59s
Deployment (air-gap, ovn)	9m 11s
Deployment (dual-stack)	2m 45s
Deployment (ovn)	8m 53s
Deployment (ovn-ic)	17m 41s
Deployment (operator, lighthouse)	3m 33s
Deployment (load-balancer)	3m 3s
Deployment (prometheus)	2m 49s
	1h 28m 42s

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