test(keyholder): remove unused imports from test modules

server/crates/arbiter-server/src/actors/keyholder.rs

@@ -332,14 +332,11 @@ impl KeyHolder {
 #[cfg(test)]
 mod tests {
     use std::collections::{HashMap, HashSet};
-    use std::sync::Arc;
 
     use diesel::dsl::{insert_into, sql_query, update};
     use diesel_async::RunQueryDsl;
-    use futures::stream::TryUnfold;
     use kameo::actor::{ActorRef, Spawn as _};
     use memsafe::MemSafe;
-    use tokio::sync::Mutex;
     use tokio::task::JoinSet;
 
     use crate::db::{self, models::ArbiterSetting};

server/crates/arbiter-server/src/actors/user_agent/tests.rs

@@ -3,7 +3,6 @@ use arbiter_proto::proto::{
     auth::{self, AuthChallengeRequest, AuthOk},
     user_agent_response::Payload as UserAgentResponsePayload,
 };
-use chrono::format;
 use diesel::{ExpressionMethods as _, QueryDsl, insert_into};
 use diesel_async::RunQueryDsl;
 use ed25519_dalek::Signer as _;