Revert "Reduce InstanceData footprint"

This reverts commit 3cdba291242cc1c1684bff7f8242262b1cdeb582.

On some systems, the target commit actually caused a massive performance
issue rather than fixing one.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 0786013e..684e89af 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -38,7 +38,6 @@ extern crate errno;
 extern crate fnv;
 extern crate font;
 extern crate glutin;
-extern crate half;
 extern crate libc;
 extern crate mio;
 extern crate notify;