remove freebsd ignore

Author: Oneirical

tests/run-make/c-link-to-rust-staticlib/rmake.rs

@@ -2,7 +2,6 @@
 // See https://github.com/rust-lang/rust/issues/10434
 
 //@ ignore-cross-compile
-//@ ignore-freebsd
 
 use run_make_support::{cc, extra_c_flags, extra_cxx_flags, run, rustc, static_lib};
 use std::fs;