run-pass/autobind seems to work, so un-xfail it

Author: catamorphism

src/test/run-pass/autobind.rs

@@ -1,8 +1,4 @@
-// FIXME: Autobind doesn't work for bare functions currently
-// because it would have to convert them to shared closures
-// xfail-test
-
-fn f<T>(x: [T]) -> T { ret x[0]; }
+fn f<T: copy>(x: [T]) -> T { ret x[0]; }
 
 fn g(act: fn([int]) -> int) -> int { ret act([1, 2, 3]); }