radv: remove old workaround for HTILE layers with F1 2021
Turns out this was likely a vkd3d-proton issue because it can no
longer be reproduced since it switched to dynamic rendering by default.
AMDGPU-PRO was also affected by the same issue at that time.
According to Hans-Kristian, some bugs related to that have also been
fixed at the same time.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17296>