chore: remove dioscuri subchart from lagoon-remote #1451

Job	Run time
test-suite (active-standby-kubernetes)	20m 52s
test-suite (api)	27m 18s
test-suite (deploytarget)	24m 30s
test-suite (features-kubernetes)	25m 44s
test-suite (features-kubernetes-2)	26m 44s
test-suite (features-variables)	27m 36s
test-suite (services)	22m 23s
test-suite (tasks)	19m 32s
	3h 14m 39s

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