Remove the #error to avoid issues with legacy not dealing with this

--- bfd/bfd-in.h.orig	2012-11-30 13:44:35.715871571 +0100
+++ bfd/bfd-in.h	2012-11-30 13:44:43.428871298 +0100
@@ -25,11 +25,6 @@
 #ifndef __BFD_H_SEEN__
 #define __BFD_H_SEEN__
 
-/* PR 14072: Ensure that config.h is included first.  */
-#if !defined PACKAGE && !defined PACKAGE_VERSION
-#error config.h must be included before this header
-#endif
-
 #ifdef __cplusplus
 extern "C" {
 #endif