ARM: dts: sun7i: Remove redundant MMC pinmux tuning

Some boards override the MMC pin muxing settings in order to enable the
pull-ups and change the drive strength to a value higher than the default.

While this was needed in the earlier days, this is now the default setting
for those pins, and therefore we don't need those board-specific settings
anymore.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>

arch/arm/boot/dts/sun7i-a20-bananapi-m1-plus.dts

@@ -197,11 +197,6 @@ brcmf: wifi@1 {
 	};
 };
 
-&mmc3_pins {
-	/* AP6210 requires pull-up */
-	bias-pull-up;
-};
-
 &ohci0 {
 	status = "okay";
 };

arch/arm/boot/dts/sun7i-a20-cubietruck.dts

@@ -215,11 +215,6 @@ brcmf: wifi@1 {
 	};
 };
 
-&mmc3_pins {
-	/* AP6210 requires pull-up */
-	bias-pull-up;
-};
-
 &ohci0 {
 	status = "okay";
 };

arch/arm/boot/dts/sun7i-a20-i12-tvbox.dts

@@ -167,11 +167,6 @@ brcmf: wifi@1 {
 	};
 };
 
-&mmc3_pins {
-	/* AP6210 / AP6330 requires pull-up */
-	bias-pull-up;
-};
-
 &ohci0 {
 	status = "okay";
 };