libweave: Remove dependency on libchromeos/chromeos/errors/error_codes.h

Codes moved into libweave.

BUG=brillo:1257
TEST=`FEATURES=test emerge-gizmo libweave`

Change-Id: If564703f1e7d1ba354d0ee991031bbcd71f0d67c
Reviewed-on: https://chromium-review.googlesource.com/293586
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
Tested-by: Vitaly Buka <vitalybuka@chromium.org>
diff --git a/buffet/shill_client.cc b/buffet/shill_client.cc
index 0d733c8..fcc49a3 100644
--- a/buffet/shill_client.cc
+++ b/buffet/shill_client.cc
@@ -11,7 +11,6 @@
 #include <chromeos/any.h>
 #include <chromeos/dbus/service_constants.h>
 #include <chromeos/errors/error.h>
-#include <chromeos/errors/error_codes.h>
 #include <weave/enum_to_string.h>
 
 #include "buffet/ap_manager_client.h"