ARM: dts: sunxi: Remove simple-panel compatible

simple-panel based bindings need only the display compatible, and
simple-panel isn't documented anywhere. Remove it.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm/boot/dts/sun5i-a13-q8-tablet.dts

@@ -49,7 +49,7 @@ / {
 	compatible = "allwinner,q8-a13", "allwinner,sun5i-a13";
 
 	panel: panel {
-		compatible = "bananapi,s070wv20-ct16", "simple-panel";
+		compatible = "bananapi,s070wv20-ct16";
 		power-supply = <&reg_vcc3v3>;
 		enable-gpios = <&axp_gpio 0 GPIO_ACTIVE_HIGH>; /* AXP GPIO0 */
 		backlight = <&backlight>;

arch/arm/boot/dts/sun8i-a23-q8-tablet.dts

@@ -63,7 +63,7 @@ &codec {
 };
 
 &panel {
-	compatible = "bananapi,s070wv20-ct16", "simple-panel";
+	compatible = "bananapi,s070wv20-ct16";
 };
 
 &tcon0_out {