diff --git a/libraries/u8glib/u8g_dev_null.c b/libraries/u8glib/u8g_dev_null.c
deleted file mode 100644
--- a/libraries/u8glib/u8g_dev_null.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
-
-  u8g_dev_null.c
-
-  Universal 8bit Graphics Library
-  
-  Copyright (c) 2011, olikraus@gmail.com
-  All rights reserved.
-
-  Redistribution and use in source and binary forms, with or without modification, 
-  are permitted provided that the following conditions are met:
-
-  * Redistributions of source code must retain the above copyright notice, this list 
-    of conditions and the following disclaimer.
-    
-  * Redistributions in binary form must reproduce the above copyright notice, this 
-    list of conditions and the following disclaimer in the documentation and/or other 
-    materials provided with the distribution.
-
-  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
-  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
-  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
-  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
-  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
-  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
-  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
-  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
-  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
-  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
-  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
-  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
-  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
-  
-  
-*/
-
-#include "u8g.h"
-
-uint8_t u8g_dev_null(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
-{
-  switch(msg)
-  {
-    case U8G_DEV_MSG_SET_8PIXEL:                /* most often used command */
-      break;
-    case U8G_DEV_MSG_SET_PIXEL:
-      break;
-    case U8G_DEV_MSG_INIT:
-      break;
-    case U8G_DEV_MSG_STOP:
-      break;
-    case U8G_DEV_MSG_PAGE_FIRST:
-      break;
-    case U8G_DEV_MSG_PAGE_NEXT:
-      break;
-#ifdef U8G_DEV_MSG_IS_BBX_INTERSECTION
-    case U8G_DEV_MSG_IS_BBX_INTERSECTION:
-      return 1;
-#endif
-    case U8G_DEV_MSG_GET_PAGE_BOX:
-      break;
-    case U8G_DEV_MSG_SET_COLOR_ENTRY:
-      break;
-    case U8G_DEV_MSG_SET_XY_CB:
-      break;
-  }
-  return 1;
-}