arm64: zynqmp: Remove unused dp_aclk clock

dp_aclk is not used anywhere that's why remove it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/zynqmp-clk-ccf.dtsi b/arch/arm/dts/zynqmp-clk-ccf.dtsi
index 987792e..b27b0aa 100644
--- a/arch/arm/dts/zynqmp-clk-ccf.dtsi
+++ b/arch/arm/dts/zynqmp-clk-ccf.dtsi
@@ -2,7 +2,7 @@
 /*
  * Clock specification for Xilinx ZynqMP
  *
- * (C) Copyright 2017 - 2020, Xilinx, Inc.
+ * (C) Copyright 2017 - 2021, Xilinx, Inc.
  *
  * Michal Simek <michal.simek@xilinx.com>
  */
@@ -67,13 +67,6 @@
 		#clock-cells = <0>;
 		clock-frequency = <27000000>;
 	};
-
-	dp_aclk: dp_aclk {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <100000000>;
-		clock-accuracy = <100>;
-	};
 };
 
 &zynqmp_firmware {