chore (backend-rs): remove unneeded serde derives

packages/backend-rs/src/federation/nodeinfo/fetch.rs

@@ -3,7 +3,7 @@
 use crate::federation::nodeinfo::schema::*;
 use crate::util::http_client;
 use isahc::AsyncReadResponseExt;
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 
 #[derive(thiserror::Error, Debug)]
 pub enum Error {
@@ -21,12 +21,12 @@ pub enum Error {
     MissingNodeinfo,
 }
 
-#[derive(Deserialize, Serialize, Debug)]
+#[derive(Deserialize, Debug)]
 pub struct NodeinfoLinks {
     links: Vec<NodeinfoLink>,
 }
 
-#[derive(Deserialize, Serialize, Debug)]
+#[derive(Deserialize, Debug)]
 pub struct NodeinfoLink {
     rel: String,
     href: String,

packages/backend-rs/src/misc/get_note_summary.rs

@@ -1,7 +1,7 @@
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 
 // TODO?: handle name collisions
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 #[crate::export(object, js_name = "NoteLikeForGetNoteSummary")]
 pub struct NoteLike {

packages/backend-rs/src/misc/latest_version.rs

@@ -3,7 +3,7 @@
 use crate::database::cache;
 use crate::util::http_client;
 use isahc::ReadResponseExt;
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 
 #[derive(thiserror::Error, Debug)]
 pub enum Error {
@@ -25,7 +25,7 @@ const UPSTREAM_PACKAGE_JSON_URL: &str =
     "https://firefish.dev/firefish/firefish/-/raw/main/package.json";
 
 async fn get_latest_version() -> Result<String, Error> {
-    #[derive(Debug, Deserialize, Serialize)]
+    #[derive(Debug, Deserialize)]
     struct Response {
         version: String,
     }

packages/backend-rs/src/service/stream/custom_emoji.rs

@@ -1,8 +1,8 @@
 use crate::service::stream::{publish_to_stream, Error, Stream};
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 
 // TODO: define schema type in other place
-#[derive(Deserialize, Serialize)]
+#[derive(Serialize)]
 #[serde(rename_all = "camelCase")]
 #[crate::export(object)]
 pub struct PackedEmoji {

packages/backend-rs/src/service/stream/moderation.rs

@@ -1,7 +1,7 @@
 use crate::service::stream::{publish_to_stream, Error, Stream};
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 
-#[derive(Deserialize, Serialize)]
+#[derive(Serialize)]
 #[serde(rename_all = "camelCase")]
 #[crate::export(object)]
 pub struct AbuseUserReportLike {