panvk: Allow 3-byte formats

We are now using the vk_meta buffer <-> image copy helpers, which do
support 3-byte formats.

Fixes: 50679213 ("panvk: Switch to vk_meta")

Signed-off-by: Rebecca Mckeever <rebecca.mckeever@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Benjamin Lee <benjamin.lee@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33437>

src/panfrost/vulkan/panvk_physical_device.c

@@ -1197,10 +1197,6 @@ format_is_supported(struct panvk_physical_device *physical_device,
          return false;
    }
 
-   /* 3byte formats are not supported by the buffer <-> image copy helpers. */
-   if (util_format_get_blocksize(pfmt) == 3)
-      return false;
-
    return true;
 }