suppress irrelevant warning/error

Display.h

@@ -33,8 +33,8 @@
 
 class Display {
 	private:
-		Adafruit_SSD1306 ssd1306;
-		U8G2_FOR_ADAFRUIT_GFX u8g2_gfx;
+		Adafruit_SSD1306 ssd1306; // @suppress("Abstract class cannot be instantiated")
+		U8G2_FOR_ADAFRUIT_GFX u8g2_gfx; // @suppress("Abstract class cannot be instantiated")
 		String configText;
 		String configOption;
 		ValueMode mode;