fix the dumb

kernel/src/scheduler.rs

@@ -18,9 +18,7 @@ impl Scheduler<'_> {
     pub fn new() -> Self {
         Self {
             data: VecDeque::new(),
-            tick_callback: None,
-            last_timer_count: 0,
-            tick_limit: 64,
+        
         }
     }
     pub fn new_process(&mut self, program: Vec<u8>) {
@@ -49,4 +47,5 @@ impl Scheduler<'_> {
             prog.run().unwrap();
             self.data.push_back(prog);
         }
+    }
 }