ARM64/dts: sm6150: Remove unused disp_rdump_memory region

This memory region is unused and conflicting with the cont splash
memory: it's mentally sane to just remove it.

Solves the following error
disp_rdump_region@9c000000 (0x000000009c000000--0x000000009d700000) overlaps
with cont_splash_region@9c000000 (0x000000009c000000--0x000000009d700000)

Change-Id: Ie1fbda6b52930f0cde4ec338334fa190a16b1759
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

Author: kholk

arch/arm64/boot/dts/qcom/sm6150.dtsi

@@ -641,11 +641,6 @@
 			label = "dfps_data_region";
 		};
 
-		disp_rdump_memory: disp_rdump_region@9c000000 {
-			reg = <0x0 0x9c000000 0x0 0x0f00000>;
-			label = "disp_rdump_region";
-		};
-
 		dump_mem: mem_dump_region {
 			compatible = "shared-dma-pool";
 			alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>;