chore: Remove old `Settings` component and routes #5111

Job	Run time
Check file changes	5s
Build React App	4m 38s
Run React Tests	5m 45s
Run Integration tests	5m 11s
Run API Tests	0s
E2E tests	14m 18s
Generate Hasura Change Summary	0s
Upsert Vultr Instance	8m 18s
Run Pulumi Preview	0s
Run Healthcheck on Pizza Services	33s
	38m 48s

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