message: vulkan: Remove unused presentQueueFamilyIndex
diff: @@ -259,7 +259,6 @@ static void getPresentationQueue(VulkanContext& mContext, VulkanSwapChain& sc) {
  FixedCapacityVector<VkQueueFamilyProperties> queueFamiliesProperties(queueFamiliesCount);
  vkGetPhysicalDeviceQueueFamilyProperties(mContext.physicalDevice, &queueFamiliesCount,
  queueFamiliesProperties.data());
  - uint32_t presentQueueFamilyIndex = 0xffff;
  // We prefer the graphics and presentation queues to be the same, so first check if that works.
  // On most platforms they must be the same anyway, and this avoids issues with MoltenVK.
  @@ -271,7 +270,6 @@ static void getPresentationQueue(VulkanContext& mContext, VulkanSwapChain& sc) {
  // https://github.com/google/filament/issues/1532
  ASSERT_POSTCONDITION(supported, "Graphics queues do not support presentation.");
  - presentQueueFamilyIndex = mContext.graphicsQueueFamilyIndex;
  sc.presentQueue = mContext.graphicsQueue;
  sc.headlessQueue = VK_NULL_HANDLE;
  }
  