[SSLErrorHandler] Eliminate stale includes

Intended to be eliminated as part of
https://chromium-review.googlesource.com/c/chromium/src/+/2010943.

TBR=carlosil@chromium.org

Bug: 1030692
Change-Id: I16e1d357fb2652119d7075c60e0f45c69426931c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2016629Reviewed-by: Colin Blundell <blundell@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734410}

chrome/browser/ssl/ssl_error_handler.cc

@@ -56,12 +56,6 @@
 #include "chrome/browser/captive_portal/captive_portal_tab_helper.h"
 #endif
 
-#if defined(OS_WIN)
-#include "base/enterprise_util.h"
-#elif defined(OS_CHROMEOS)
-#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
-#endif  // #if defined(OS_WIN)
-
 #if defined(OS_ANDROID)
 #include "base/android/jni_android.h"
 #include "chrome/browser/ssl/captive_portal_helper_android.h"