arm64: dts: mediatek: mt7988a-bpi-r4: drop unused pins

Pins were moved from SoC dtsi to Board level dtsi without cleaning up
to needed ones. Drop the unused pins now.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250706132213.20412-13-linux@fw-web.de
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Author: frank-w

arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi

@@ -223,18 +223,6 @@
 };
 
 &pio {
-	mdio0_pins: mdio0-pins {
-		mux {
-			function = "eth";
-			groups = "mdc_mdio0";
-		};
-
-		conf {
-			pins = "SMI_0_MDC", "SMI_0_MDIO";
-			drive-strength = <8>;
-		};
-	};
-
 	i2c0_pins: i2c0-g0-pins {
 		mux {
 			function = "i2c";
@@ -249,20 +237,6 @@
 		};
 	};
 
-	i2c1_sfp_pins: i2c1-sfp-g0-pins {
-		mux {
-			function = "i2c";
-			groups = "i2c1_sfp";
-		};
-	};
-
-	i2c2_0_pins: i2c2-g0-pins {
-		mux {
-			function = "i2c";
-			groups = "i2c2_0";
-		};
-	};
-
 	i2c2_1_pins: i2c2-g1-pins {
 		mux {
 			function = "i2c";
@@ -298,48 +272,13 @@
 		};
 	};
 
-	gbe0_led1_pins: gbe0-led1-pins {
-		mux {
-			function = "led";
-			groups = "gbe0_led1";
-		};
-	};
-
-	gbe1_led1_pins: gbe1-led1-pins {
-		mux {
-			function = "led";
-			groups = "gbe1_led1";
-		};
-	};
-
-	gbe2_led1_pins: gbe2-led1-pins {
-		mux {
-			function = "led";
-			groups = "gbe2_led1";
-		};
-	};
-
-	gbe3_led1_pins: gbe3-led1-pins {
-		mux {
-			function = "led";
-			groups = "gbe3_led1";
-		};
-	};
-
 	i2p5gbe_led0_pins: 2p5gbe-led0-pins {
 		mux {
 			function = "led";
 			groups = "2p5gbe_led0";
 		};
 	};
 
-	i2p5gbe_led1_pins: 2p5gbe-led1-pins {
-		mux {
-			function = "led";
-			groups = "2p5gbe_led1";
-		};
-	};
-
 	mmc0_pins_emmc_45: mmc0-emmc-45-pins {
 		mux {
 			function = "flash";
@@ -361,40 +300,12 @@
 		};
 	};
 
-	snfi_pins: snfi-pins {
-		mux {
-			function = "flash";
-			groups = "snfi";
-		};
-	};
-
-	spi0_pins: spi0-pins {
-		mux {
-			function = "spi";
-			groups = "spi0";
-		};
-	};
-
 	spi0_flash_pins: spi0-flash-pins {
 		mux {
 			function = "spi";
 			groups = "spi0", "spi0_wp_hold";
 		};
 	};
-
-	spi2_pins: spi2-pins {
-		mux {
-			function = "spi";
-			groups = "spi2";
-		};
-	};
-
-	spi2_flash_pins: spi2-flash-pins {
-		mux {
-			function = "spi";
-			groups = "spi2", "spi2_wp_hold";
-		};
-	};
 };
 
 &pwm {