kernel now build

I commented out semaphore code too cause it need to be updated
and having some error cause the compiler to not check for borrow errors

src/kernel/system.rs

@@ -2,11 +2,9 @@
 //! 
 //! Module containing structs and methods pertaining to the state of the operating system
 
-use std::{cell::RefCell, rc::Rc};
-
 use crate::simulator::machine::Machine;
 
-use super::{thread_manager::ThreadManager, thread::Thread};
+use super::{thread_manager::ThreadManager};
 
 /// This macro properly initializes the system
 #[macro_export]
@@ -46,13 +44,6 @@ impl System {
         }
     }
 
-    /// Sets a thread asleep
-    /// 
-    pub fn thread_sleep(&mut self, thread: Rc<RefCell<Thread>>) {
-        let machine = self.get_machine();
-        self.thread_manager.thread_sleep(machine, thread);
-    }
-
     // GETTERS
 
     /// Returns the Machine
@@ -88,7 +79,7 @@ pub enum ObjectType {
 #[cfg(test)]
 mod tests {
 
-    use crate::{System, Machine};
+    use crate::Machine;
 
     #[test]
     fn test_init_system() {