matrix: drop dead unread_count handler

hive-matrix-mcp/src/handlers.rs

@@ -901,28 +901,6 @@ pub async fn download_file(
     }))
 }
 
-/// Return the number of joined rooms with at least one unread
-/// notification according to the server-side push notification counts
-/// cached by the matrix-sdk client.
-///
-/// The harness uses [`unread_summary`] (richer, with per-room body
-/// snippets) rather than this endpoint. `unread_count` is kept as a
-/// lightweight public endpoint for callers that only need the count
-/// and want to avoid the `/messages` network round-trips that
-/// [`collect_unread`] issues for count==1 rooms.
-#[must_use]
-pub fn unread_count(client: &Client) -> DaemonResponse {
-    let rooms = u32::try_from(
-        client
-            .joined_rooms()
-            .into_iter()
-            .filter(|r| r.unread_notification_counts().notification_count > 0)
-            .count(),
-    )
-    .unwrap_or(u32::MAX);
-    DaemonResponse::ok(&serde_json::json!({ "rooms": rooms }))
-}
-
 /// Collect all rooms with unread notifications and build per-room
 /// [`crate::protocol::RoomUnread`] entries. For rooms with exactly
 /// one unread notification the last message body is fetched via the