Remove unneeded #defines from libjingle_xmpp.

third_party/libjingle_xmpp/xmpp/constants.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 53 matching lines @@
 extern const char STR_X[];
 extern const char STR_GOOGLE_COM[];
 extern const char STR_GMAIL_COM[];
 extern const char STR_GOOGLEMAIL_COM[];
 extern const char STR_DEFAULT_DOMAIN[];
 extern const char STR_TALK_GOOGLE_COM[];
 extern const char STR_TALKX_L_GOOGLE_COM[];
 extern const char STR_XMPP_GOOGLE_COM[];
 extern const char STR_XMPPX_L_GOOGLE_COM[];
 
-#ifdef FEATURE_ENABLE_VOICEMAIL
 extern const char STR_VOICEMAIL[];
 extern const char STR_OUTGOINGVOICEMAIL[];
-#endif
 
 extern const char STR_UNAVAILABLE[];
 
 extern const char NS_PING[];
 extern const StaticQName QN_PING;
 
 extern const char NS_MUC_UNIQUE[];
 extern const StaticQName QN_MUC_UNIQUE_QUERY;
 extern const StaticQName QN_HANGOUT_ID;
 
@@ skipping 454 matching lines @@
 
 
 extern const char AUTH_MECHANISM_GOOGLE_COOKIE[];
 extern const char AUTH_MECHANISM_GOOGLE_TOKEN[];
 extern const char AUTH_MECHANISM_OAUTH2[];
 extern const char AUTH_MECHANISM_PLAIN[];
 
 }  // namespace buzz
 
 #endif  // WEBRTC_LIBJINGLE_XMPP_CONSTANTS_H_