remove machine from system

src/main.rs

@@ -13,12 +13,10 @@ mod kernel;
 /// module containing useful tools which can be use in most part of the OS to ease the development of the OS
 pub mod utility;
 
-use std::{rc::Rc, cell::RefCell};
-
 use kernel::system::System;
 use simulator::machine::Machine;
 
 fn main() {
     let machine = Machine::init_machine();
-    let system = Rc::new(RefCell::new(System::new(machine)));
+    let system = System::default();
 }