Remove stabilized features

Author: Stjepan Glavina

src/libcoretest/lib.rs

@@ -21,10 +21,7 @@
 #![feature(flt2dec)]
 #![feature(fmt_internals)]
 #![feature(libc)]
-#![feature(move_cell)]
 #![feature(nonzero)]
-#![feature(ordering_chaining)]
-#![feature(ptr_unaligned)]
 #![feature(rand)]
 #![feature(raw)]
 #![feature(sip_hash_13)]