Remove some dead code.

62dddc8a · Silas Boyd-Wickizer · cbecab91 · 62dddc8a · 62dddc8a · 62dddc8a
--- a/ide.c
+++ b/ide.c
 #include "types.h"
 #include "kernel.h"
-void
-iderw(struct buf *b)
-{
-    panic("iderw");
-}
-#if 0
 // Simple PIO-based (non-DMA) IDE driver code.
 #include "types.h"
@@ -169,4 +162,4 @@ iderw(struct buf *b)
  release(&idelock);
 }
-#endif
--- a/proc.c
+++ b/proc.c
--- a/vm.c
+++ b/vm.c