zink: do not prevent using supported extension
VK_KHR_get_physical_device_properties2 is written against Vulkan 1.0, and is perfectly allowed to be used with Vulkan 1.0 devices. So let's not pointlessly prevent this.
Doing this prevents me from adding support for VK_EXT_vertex_attribute_divisor on Lavapipe, because we need to use this function to check if the feature is really supported.
Fixes: 752f6d80 ("zink: setup version dependent VkPhysicalDeviceVulkanFeatures and VkPhysicalDeviceVulkanProperties.")