Remove deny_unsafe, due to introduction of unsafe code in thread_loca…

…l expansion
servo · bors-servo · Jan 15, 2016 · Dec 30, 2015 · Jan 13, 2016 · Jan 13, 2016
commit 8a0175c04103738427540579014aa4f26f313bf6
diff --git a/components/style/lib.rs b/components/style/lib.rs
@@ -14,8 +14,6 @@
 #![plugin(serde_macros)]
 #![plugin(plugins)]
 
-#![deny(unsafe_code)]
-
 extern crate app_units;
 #[macro_use]
 extern crate bitflags;