Revert "vulkan/wsi/x11: Ensure we create at least minImageCount images."

Revert "vulkan/wsi/x11: Ensure we create at least minImageCount images."

This breaks some games like Wolfenstein Youngblood or Wolfenstein 2
that crash at launch if the number of images is more than what they
expected.

We could add vk_x11_strict_image_count to fix these game bugs but
it seems more conservative to revert that change and add a new wsi
drirc workaround for Doom Eternal.

This reverts commit 5f97dfc4c848cb6388ec138c19a22a8a880901d1.

Cc: 20.1 <mesa-stable@lists.freedesktop.org>
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/5704>