perf: remove unnecessary async

src/api/client_server/sync.rs

@@ -1197,14 +1197,11 @@ pub async fn sync_events_v4_route(
 
     if globalsince == 0 {
         if let Some(conn_id) = &body.conn_id {
-            services()
+            services().users.forget_sync_request_connection(
-                .users
-                .forget_sync_request_connection(
                 sender_user.clone(),
                 sender_device.clone(),
                 conn_id.clone(),
             )
-                .await
         }
     }
 
@@ -1474,17 +1471,14 @@ pub async fn sync_events_v4_route(
         );
 
         if let Some(conn_id) = &body.conn_id {
-            services()
+            services().users.update_sync_known_rooms(
-                .users
-                .update_sync_known_rooms(
                 sender_user.clone(),
                 sender_device.clone(),
                 conn_id.clone(),
                 list_id,
                 new_known_rooms,
                 globalsince,
-                )
+            );
-                .await;
         }
     }
 
@@ -1516,29 +1510,23 @@ pub async fn sync_events_v4_route(
     }
 
     if let Some(conn_id) = &body.conn_id {
-        services()
+        services().users.update_sync_known_rooms(
-            .users
-            .update_sync_known_rooms(
             sender_user.clone(),
             sender_device.clone(),
             conn_id.clone(),
             "subscriptions".to_owned(),
             known_subscription_rooms,
             globalsince,
-            )
+        );
-            .await;
     }
 
     if let Some(conn_id) = &body.conn_id {
-        services()
+        services().users.update_sync_subscriptions(
-            .users
-            .update_sync_subscriptions(
             sender_user.clone(),
             sender_device.clone(),
             conn_id.clone(),
             body.room_subscriptions,
-            )
+        );
-            .await;
     }
 
     let mut rooms = BTreeMap::new();

src/service/users/mod.rs

@@ -45,7 +45,7 @@ impl Service {
         self.db.exists(user_id)
     }
 
-    pub async fn forget_sync_request_connection(
+    pub fn forget_sync_request_connection(
         &self,
         user_id: OwnedUserId,
         device_id: OwnedDeviceId,
@@ -186,7 +186,7 @@ impl Service {
         cached.known_rooms.clone()
     }
 
-    pub async fn update_sync_subscriptions(
+    pub fn update_sync_subscriptions(
         &self,
         user_id: OwnedUserId,
         device_id: OwnedDeviceId,
@@ -212,7 +212,7 @@ impl Service {
         cached.subscriptions = subscriptions;
     }
 
-    pub async fn update_sync_known_rooms(
+    pub fn update_sync_known_rooms(
         &self,
         user_id: OwnedUserId,
         device_id: OwnedDeviceId,