diff --git a/avr/common/utils_io.asm b/avr/common/utils_io.asm
index e9f3a1f..4ce16f5 100644
--- a/avr/common/utils_io.asm
+++ b/avr/common/utils_io.asm
@@ -7,29 +7,6 @@
 ; * Please see toplevel file COPYING of that project for license details.   *
 ; ***************************************************************************
 
-#if 0
-; M_IO_READ DEST, SRC
-.macro M_IO_READ
-.if @1 < 64
-  in @0, @1
-.else
-  lds @0, @1
-.endif
-.endmacro
-
-
-
-; M_IO_WRITE DEST, SRC
-.macro M_IO_WRITE
-.if @0 < 64
-  out @0, @1
-.else
-  sts @0, @1
-.endif
-.endmacro
-
-#endif
-
 
 ; inr DEST, SRC
 .macro inr