Remove the dependency on the num crate.

servo · bors-servo · Jan 16, 2017 · Jan 16, 2017 · Jan 16, 2017 · c06f6eb476edcefbcaa7c5cd990b4335114e7346
commit c06f6eb476edcefbcaa7c5cd990b4335114e7346
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/servo-tidy.toml b/servo-tidy.toml
@@ -27,6 +27,7 @@ rand = [
   "websocket",
   "ws",
 ]
+num = []
 
 [ignore]
 # Ignored packages with duplicated versions