HSD#18042683105: arm64: dts: agilex7: remove undefined clock in SMMU node

Removed undefined clock in SMMU node which causes smmu probe to fail.

Signed-off-by: Adrian Ng Ho Yin <[email protected]>

Author: hoyin0722

arch/arm64/boot/dts/intel/socfpga_agilex.dtsi

@@ -457,7 +457,6 @@
 				<GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
 			stream-match-mask = <0x7ff0>;
 			clocks = <&clkmgr AGILEX_MPU_CCU_CLK>,
-				 <&clkmgr AGILEX_L3_MAIN_FREE_CLK>,
 				 <&clkmgr AGILEX_L4_MAIN_CLK>;
 			status = "disabled";
 		};