Fix and cleanup Sourcify API Swagger Docs

[acuarica]

• [x] Fix Servers drop-down to point to the right server whenever it's local, integration or prod, for reference see [1,2]
• [x] Remove paths not working or applicable from the endpoint list, for instance Session endpoints

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[1] https://testnet.mirrornode.hedera.com/api/v1/docs/ [2] https://github.com/hashgraph/hedera-mirror-node/blob/main/hedera-mirror-rest/api/v1/openapi.yml

[Reccetech]

Looks good to me.