Remove unused clippy lints

libk/src/lib.rs

@@ -1,6 +1,4 @@
 #![no_std]
-// #![allow(async_fn_in_trait)]
-#![warn(tail_expr_drop_order)]
 #![warn(
     clippy::correctness,
     clippy::nursery,
@@ -9,7 +7,8 @@
     clippy::suspicious,
     clippy::perf,
     rustdoc::missing_errors_doc,
-    rustdoc::missing_panics_doc
+    rustdoc::missing_panics_doc,
+    tail_expr_drop_order
 )]
 
 extern crate alloc;