Add mouse and clean virtio

src/panic_handler.rs

@@ -8,7 +8,7 @@ use alloc::{format, string::ToString};
 use log::error;
 
 use crate::{
-    HEAP, HEAP_INITIALIZED,
+    HEAP_INITIALIZED,
     draw::{Color, Draw, FONT_HEIGHT},
     uart::write_uart,
     vga::Vga,