removing the conditional compilation of the dynamic_lib reference

Author: Dave Huseby

src/libstd/lib.rs

@@ -410,7 +410,6 @@ pub mod num;
 pub mod thread;
 
 pub mod collections;
-#[cfg(any(target_os = "linux", target_os = "windows"))]
 pub mod dynamic_lib;
 pub mod env;
 pub mod ffi;