Fix clippy errors

crates/herald-server/src/bot.rs

@@ -20,7 +20,6 @@ pub struct ReviewResult {
 pub struct ReviewItem {
     pub filename: String,
     pub line: Option<u64>,
-    pub code: String,
     pub message: String,
 }
 

crates/herald-server/src/gitea.rs

@@ -197,7 +197,6 @@ pub struct ReviewPayload {
 
 #[derive(Deserialize, Debug)]
 pub struct PullRequest {
-    pub id: u64,
     pub diff_url: String,
     pub number: u64,
     pub title: String,
@@ -207,12 +206,10 @@ pub struct PullRequest {
 pub struct Comment {
     pub id: u64,
     pub body: String,
-    pub user: User,
 }
 
 #[derive(Deserialize, Debug)]
 pub struct User {
-    pub id: u64,
     pub login: String,
 }
 
@@ -282,10 +279,8 @@ mod tests {
         match result.unwrap() {
             WebhookType::Review(payload) => {
                 assert_eq!(payload.action, "created");
-                assert_eq!(payload.pull_request.id, 42);
                 assert_eq!(payload.comment.id, 7);
                 assert_eq!(payload.comment.body, "@test_bot LGTM");
-                assert_eq!(payload.comment.user.id, 100);
             }
         }
     }
@@ -375,10 +370,8 @@ mod tests {
 
         let payload: ReviewPayload = serde_json::from_value(json).unwrap();
         assert_eq!(payload.action, "created");
-        assert_eq!(payload.pull_request.id, 99);
         assert_eq!(payload.comment.id, 12);
         assert_eq!(payload.comment.body, "Needs work");
-        assert_eq!(payload.comment.user.id, 200);
     }
 
     #[test]