NEX-4233 remove unnecessary libdladm header includes
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
Reviewed by: Steve Peng <steve.peng@nexenta.com>

*** 19,35 ****
   * CDDL HEADER END
   */
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _LIBDLSIM_H
  #define _LIBDLSIM_H
  
  #include <sys/mac.h>
- #include <libdladm_impl.h>
  #include <net/simnet.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
--- 19,35 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
   */
  
  #ifndef _LIBDLSIM_H
  #define _LIBDLSIM_H
  
  #include <sys/mac.h>
  #include <net/simnet.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif