venus: suppress a false logging

Should only log when there's batched query feedbacks in the suspended
render pass instance. Additionally gate behind debug option.

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24379>

src/virtio/vulkan/vn_command_buffer.c

@@ -692,7 +692,7 @@ vn_cmd_end_rendering(struct vn_command_buffer *cmd)
     */
    if (!cmd->builder.suspending)
       vn_cmd_record_batched_query_feedback(cmd);
-   else
+   else if (VN_DEBUG(RESULT) && !list_is_empty(&cmd->builder.query_batches))
       vn_log(cmd->pool->device->instance, "query dropped by suspended pass");
 
    cmd->builder.in_render_pass = false;