second attempt to stop AVR build from messing things up for everyone else

Adafruit_GFX.cpp

@@ -244,6 +244,7 @@ void Adafruit_GFX::writeFillRect(int16_t x, int16_t y, int16_t w, int16_t h,
   fillRect(x, y, w, h, color);
 }
 
+#ifndef __AVR__
 /**************************************************************************/
 /*!
    @brief    set the address window (memory area), overwrite in subclasses if needed
@@ -273,7 +274,7 @@ void Adafruit_GFX::writePixels(uint16_t *colors, uint32_t len, bool block,
 {
   (void)colors; (void)len; (void)block; (void)bigEndian;
 }
-
+#endif __AVR__
 /**************************************************************************/
 /*!
    @brief    End a display-writing routine, overwrite in subclasses if