Remove unused #[macro_use] attributes

This removes two unused import warnings.

BUG=None
TEST=cargo build produces no warnings

Change-Id: I0d1ac9d13d6ae0fc620b9c2d561972f23cdc27e3
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1394724
Reviewed-by: David Tolnay <dtolnay@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
diff --git a/devices/src/lib.rs b/devices/src/lib.rs
index 11f4b16..b39116e 100644
--- a/devices/src/lib.rs
+++ b/devices/src/lib.rs
@@ -4,7 +4,6 @@
 
 //! Emulates virtual and hardware devices.
 
-#[macro_use]
 extern crate bit_field;
 extern crate byteorder;
 extern crate data_model;
diff --git a/resources/src/lib.rs b/resources/src/lib.rs
index e19ac7c..7169d25 100644
--- a/resources/src/lib.rs
+++ b/resources/src/lib.rs
@@ -8,7 +8,6 @@
 extern crate gpu_buffer;
 extern crate libc;
 extern crate sys_util;
-#[macro_use]
 extern crate msg_socket;
 
 mod address_allocator;