Remove stray #include.

This was left in here while debugging. I forgot to remove it.

BUG=none

Review-Url: https://codereview.chromium.org/2189373002
Cr-Original-Commit-Position: refs/heads/master@{#408703}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: a13385059eb0bd0e44e1442572787abed2529675
diff --git a/ssl/cmpcert.cc b/ssl/cmpcert.cc
index 6e94688..ebc8745 100644
--- a/ssl/cmpcert.cc
+++ b/ssl/cmpcert.cc
@@ -10,7 +10,6 @@
 #include <secder.h>
 #include <secitem.h>
 
-#include "base/logging.h"
 #include "base/strings/string_piece.h"
 
 namespace net {