diff --git a/libraries/u8glib/u8g_line.c b/libraries/u8glib/u8g_line.c
deleted file mode 100644
--- a/libraries/u8glib/u8g_line.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
-
-  u8g_line.h
-  
-  Universal 8bit Graphics Library
-  
-  Copyright (c) 2012, 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"
-
-void u8g_DrawLine(u8g_t *u8g, u8g_uint_t x1, u8g_uint_t y1, u8g_uint_t x2, u8g_uint_t y2)
-{
-  u8g_uint_t tmp;
-  u8g_uint_t x,y;
-  u8g_uint_t dx, dy;
-  u8g_int_t err;
-  u8g_int_t ystep;
-
-  uint8_t swapxy = 0;
-  
-  /* no BBX intersection check at the moment, should be added... */
-
-  if ( x1 > x2 ) dx = x1-x2; else dx = x2-x1;
-  if ( y1 > y2 ) dy = y1-y2; else dy = y2-y1;
-
-  if ( dy > dx ) 
-  {
-    swapxy = 1;
-    tmp = dx; dx =dy; dy = tmp;
-    tmp = x1; x1 =y1; y1 = tmp;
-    tmp = x2; x2 =y2; y2 = tmp;
-  }
-  if ( x1 > x2 ) 
-  {
-    tmp = x1; x1 =x2; x2 = tmp;
-    tmp = y1; y1 =y2; y2 = tmp;
-  }
-  err = dx >> 1;
-  if ( y2 > y1 ) ystep = 1; else ystep = -1;
-  y = y1;
-  for( x = x1; x <= x2; x++ )
-  {
-    if ( swapxy == 0 ) 
-      u8g_DrawPixel(u8g, x, y); 
-    else 
-      u8g_DrawPixel(u8g, y, x); 
-    err -= (uint8_t)dy;
-    if ( err < 0 ) 
-    {
-      y += (u8g_uint_t)ystep;
-      err += (u8g_uint_t)dx;
-    }
-  }
-}