chore: Drop `adminClient` (1/2) #2926

Job	Run time
Check file changes	3s
E2E tests	30m 33s
Run API Tests	3m 53s
Generate Hasura Change Summary	0s
Build React App	6m 29s
Run Integration tests	7m 50s
Run React Tests	0s
Upsert Vultr Instance	6m 10s
Run Pulumi Preview	0s
Run Healthcheck on Pizza Services	0s
	54m 58s

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