Revert "vulkan/swapchain: check if host has color management actually enabled"
This reverts commit 51c7d2c1.
This is completely dead code because colorspaces added by VK_EXT_swapchain_colorspace will never be advertised to us if the host doesn't advertise support for the necessary primaries/transfer functions.
If the host is claiming support for things it doesn't indeed support, then it's a bug there and shouldn't be worked around in libplacebo.
Moreover, it seems this heuristic for checking for color management support completely fails on Nvidia* at least, so let's not have this in libplacebo.
Edited by llyyr