Compile error when using atomics

Signed-off-by: Ryan Levick <[email protected]>

Author: rylev

library/std/src/sys/wasi_preview2/mod.rs

@@ -49,16 +49,7 @@ pub mod time;
 
 cfg_if::cfg_if! {
     if #[cfg(target_feature = "atomics")] {
-        #[path = "../unix/locks"]
-        pub mod locks {
-            #![allow(unsafe_op_in_unsafe_fn)]
-            mod futex_condvar;
-            mod futex_mutex;
-            mod futex_rwlock;
-            pub(crate) use futex_condvar::Condvar;
-            pub(crate) use futex_mutex::Mutex;
-            pub(crate) use futex_rwlock::RwLock;
-        }
+        compile_error!("The wasm32-wasi-preview2 target does not support atomics");
     } else {
         #[path = "../unsupported/locks/mod.rs"]
         pub mod locks;