Don't enable stdsimd feature on aarch64 since intrinsics are now stable

Author: marmeladema

src/lib.rs

@@ -5,7 +5,7 @@
 //! crate](https://github.com/BurntSushi/aho-corasick).
 
 #![warn(missing_docs)]
-#![cfg_attr(target_arch = "aarch64", feature(stdsimd))]
+// Will be stabilized in 1.61.0 with https://github.com/rust-lang/rust/pull/90621
 #![cfg_attr(target_arch = "aarch64", feature(aarch64_target_feature))]
 
 /// Substring search implementations using aarch64 architecture features.