vfio-bindings: Remove unnecessary linting attribute

Signed-off-by: Bo Chen <[email protected]>

Author: likebreath

vfio-bindings/src/vfio_bindings/mod.rs

@@ -5,8 +5,6 @@
 #![allow(non_upper_case_globals)]
 #![allow(non_camel_case_types)]
 #![allow(non_snake_case)]
-// Keep this until https://github.com/rust-lang/rust-bindgen/issues/1651 is fixed.
-#![cfg_attr(test, allow(deref_nullptr))]
 
 #[allow(clippy::undocumented_unsafe_blocks)]
 pub mod vfio;