Update Graphics.h

Added definition to remove setDisplayMode, selectDisplayMode and getDisplayMode on Inkplate 2 and 6COLOR

Author: gogi640

src/include/Graphics.h

@@ -56,9 +56,8 @@ class Graphics : public Shapes, public Image
 
     void drawPixel(int16_t x, int16_t y, uint16_t color) override;
 
+#if !defined(ARDUINO_INKPLATECOLOR) && !defined(ARDUINO_INKPLATE2) 
     void selectDisplayMode(uint8_t _mode);
-
-#ifndef ARDUINO_INKPLATECOLOR
     void setDisplayMode(uint8_t _mode);
     uint8_t getDisplayMode();
 #endif