remove unknown features

src/lib.rs

@@ -1,11 +1,9 @@
 #![allow(clippy::type_complexity)]
 #![allow(incomplete_features)]
 #![feature(inline_const)]
-#![feature(drain_filter)]
 #![feature(try_blocks)]
 #![feature(test)]
 #![feature(error_generic_member_access)]
-#![feature(provide_any)]
 #![feature(lazy_cell)]
 
 extern crate test;