Remove double initialization of shaderImageAtomicInt64.pNext (o3de#17513)

Signed-off-by: Umesh Rajesh Ramchandani <[email protected]>

Author: umesh-huawei

Gems/Atom/RHI/Vulkan/Code/Source/RHI/Device.cpp

@@ -273,7 +273,6 @@ namespace AZ
                 vulkan12Features.descriptorBindingUpdateUnusedWhilePending = physicalDevice.GetPhysicalDeviceVulkan12Features().descriptorBindingUpdateUnusedWhilePending;
                 vulkan12Features.shaderOutputViewportIndex = physicalDevice.GetPhysicalDeviceVulkan12Features().shaderOutputViewportIndex;
                 vulkan12Features.shaderOutputLayer = physicalDevice.GetPhysicalDeviceVulkan12Features().shaderOutputLayer;
-                shaderImageAtomicInt64.pNext = &vulkan12Features;
 
                 accelerationStructureFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ACCELERATION_STRUCTURE_FEATURES_KHR;
                 accelerationStructureFeatures.accelerationStructure = physicalDevice.GetPhysicalDeviceAccelerationStructureFeatures().accelerationStructure;