chore(backend): remove unused codes

packages/backend/src/server/api/stream/Connection.ts

@@ -32,7 +32,6 @@ export default class Connection {
 	public subscriber: StreamEventEmitter;
 	private channels: Channel[] = [];
 	private subscribingNotes: Partial<Record<string, number>> = {};
-	private cachedNotes: Packed<'Note'>[] = [];
 	public userProfile: MiUserProfile | null = null;
 	public following: Record<string, Pick<MiFollowing, 'withReplies'> | undefined> = {};
 	public followingChannels: Set<string> = new Set();
@@ -132,26 +131,6 @@ export default class Connection {
 		this.sendMessageToWs(data.type, data.body);
 	}
 
-	@bindThis
-	public cacheNote(note: Packed<'Note'>) {
-		const add = (note: Packed<'Note'>) => {
-			const existIndex = this.cachedNotes.findIndex(n => n.id === note.id);
-			if (existIndex > -1) {
-				this.cachedNotes[existIndex] = note;
-				return;
-			}
-
-			this.cachedNotes.unshift(note);
-			if (this.cachedNotes.length > 32) {
-				this.cachedNotes.splice(32);
-			}
-		};
-
-		add(note);
-		if (note.reply) add(note.reply);
-		if (note.renote) add(note.renote);
-	}
-
 	@bindThis
 	private onReadNotification(payload: JsonValue | undefined) {
 		this.notificationService.readAllNotification(this.user!.id);

packages/backend/src/server/api/stream/channels/antenna.ts

@@ -43,8 +43,6 @@ class AntennaChannel extends Channel {
 
 			if (this.isNoteMutedOrBlocked(note)) return;
 
-			this.connection.cacheNote(note);
-
 			this.send('note', note);
 		} else {
 			this.send(data.type, data.body);

packages/backend/src/server/api/stream/channels/channel.ts

@@ -49,8 +49,6 @@ class ChannelChannel extends Channel {
 			}
 		}
 
-		this.connection.cacheNote(note);
-
 		this.send('note', note);
 	}
 

packages/backend/src/server/api/stream/channels/global-timeline.ts

@@ -65,8 +65,6 @@ class GlobalTimelineChannel extends Channel {
 			}
 		}
 
-		this.connection.cacheNote(note);
-
 		this.send('note', note);
 	}
 

packages/backend/src/server/api/stream/channels/hashtag.ts

@@ -53,8 +53,6 @@ class HashtagChannel extends Channel {
 			}
 		}
 
-		this.connection.cacheNote(note);
-
 		this.send('note', note);
 	}
 

packages/backend/src/server/api/stream/channels/home-timeline.ts

@@ -86,8 +86,6 @@ class HomeTimelineChannel extends Channel {
 			}
 		}
 
-		this.connection.cacheNote(note);
-
 		this.send('note', note);
 	}
 

packages/backend/src/server/api/stream/channels/hybrid-timeline.ts

@@ -100,8 +100,6 @@ class HybridTimelineChannel extends Channel {
 			}
 		}
 
-		this.connection.cacheNote(note);
-
 		this.send('note', note);
 	}
 

packages/backend/src/server/api/stream/channels/local-timeline.ts

@@ -75,8 +75,6 @@ class LocalTimelineChannel extends Channel {
 			}
 		}
 
-		this.connection.cacheNote(note);
-
 		this.send('note', note);
 	}
 

packages/backend/src/server/api/stream/channels/main.ts

@@ -39,7 +39,6 @@ class MainChannel extends Channel {
 						const note = await this.noteEntityService.pack(data.body.note.id, this.user, {
 							detail: true,
 						});
-						this.connection.cacheNote(note);
 						data.body.note = note;
 					}
 					break;
@@ -52,7 +51,6 @@ class MainChannel extends Channel {
 						const note = await this.noteEntityService.pack(data.body.id, this.user, {
 							detail: true,
 						});
-						this.connection.cacheNote(note);
 						data.body = note;
 					}
 					break;

packages/backend/src/server/api/stream/channels/user-list.ts

@@ -118,8 +118,6 @@ class UserListChannel extends Channel {
 			}
 		}
 
-		this.connection.cacheNote(note);
-
 		this.send('note', note);
 	}