Remove never-used client parameter from message handler functions (#13406)

Every single client-side RPC message handler function took an unused
`Arc<Client>` parameter. This removes that.

Release Notes:

- N/A
6fba1e46a8Max Brunsfeld committed on 6/22/2024, 11:07:36 PM· committed by GitHubparent988ee93
12 files changedLine totals unavailable