Remove unsupported targets

Author: cactorium

src/unix/uclibc/mod.rs

@@ -1760,12 +1760,8 @@ cfg_if! {
             target_arch = "mips64"))] {
         mod mips;
         pub use self::mips::*;
-    } else if #[cfg(any(target_arch = "s390x"))] {
-        mod s390x;
-        pub use self::s390x::*;
     } else {
-        mod other;
-        pub use self::other::*;
+        pub use unsupported_target;
     }
 }