Question about Kernel option "nvidia-drm.modeset=1"

My system previously ran an nVidida card but is now all AMD. I have noticed that “nvidia-drm.modeset=1” is still set as a kernel option. Normally, I’d assume I no longer need it but, I do have libvdpau installed (and mesa-vdpau so it works with the AMD card). Given that libvdpau is identified as an nVidia library, do I still need to keep that kernel option? or can I get rid of it?

Just remove nvidia-drm.modeset=1 if you do not use Nvidia.
You should keep libvdpau that is required by some useful dependencies, e.g ffmpeg and mpv.