fix: execution order of listening ipc thread

src/core_main.rs

@@ -246,8 +246,6 @@ pub fn core_main() -> Option<Vec<String>> {
         } else if args[0] == "--cm" {
             // call connection manager to establish connections
             // meanwhile, return true to call flutter window to show control panel
-            #[cfg(feature = "flutter")]
-            crate::flutter::connection_manager::start_listen_ipc_thread();
             crate::ui_interface::start_option_status_sync();
         }
     }