chore(raft): hide unused code warnings

this will be removed once we implement all of the `todo!` and
`unimplemented!` stuff

Author: gmoshkin

tarantool/src/raft/mod.rs

@@ -1,4 +1,5 @@
 #![cfg(feature = "raft_node")]
+#![allow(dead_code, unused_variables)]
 
 use std::cell::RefCell;
 use std::collections::VecDeque;