[Cleanup] Remove the no longer used GoogleSearch.AccessPoint metric.

components/google/core/browser/google_search_metrics.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/google/core/browser/google_search_metrics.h"
-
-#include "base/logging.h"
-#include "base/metrics/histogram_macros.h"
-
-GoogleSearchMetrics::GoogleSearchMetrics() {
-}
-
-GoogleSearchMetrics::~GoogleSearchMetrics() {
-}
-
-void GoogleSearchMetrics::RecordGoogleSearch(AccessPoint ap) const {
-  DCHECK_NE(AP_BOUNDARY, ap);
-  UMA_HISTOGRAM_ENUMERATION("GoogleSearch.AccessPoint", ap, AP_BOUNDARY);
-}
-
-#if defined(OS_ANDROID)
-void GoogleSearchMetrics::RecordAndroidGoogleSearch(
-    AccessPoint ap,
-    bool prerender_enabled) const {
-  DCHECK_NE(AP_BOUNDARY, ap);
-  if (prerender_enabled) {
-    UMA_HISTOGRAM_ENUMERATION("GoogleSearch.AccessPoint_PrerenderEnabled",
-                              ap, AP_BOUNDARY);
-  } else {
-    UMA_HISTOGRAM_ENUMERATION("GoogleSearch.AccessPoint_PrerenderDisabled",
-                              ap, AP_BOUNDARY);
-  }
-}
-#endif