[Cleanup] Remove some expired omnibox field trials.

chrome/browser/autocomplete/search_provider_unittest.cc

 // Copyright 2012 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/omnibox/browser/search_provider.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 531 matching lines @@
   }
 }
 
 void SearchProviderTest::ResetFieldTrialList() {
   // Destroy the existing FieldTrialList before creating a new one to avoid
   // a DCHECK.
   field_trial_list_.reset();
   field_trial_list_.reset(new base::FieldTrialList(
       new metrics::SHA1EntropyProvider("foo")));
   variations::testing::ClearAllVariationParams();
-  base::FieldTrial* trial = base::FieldTrialList::CreateFieldTrial(
-      "AutocompleteDynamicTrial_0", "DefaultGroup");
-  trial->group();
 }
+
 base::FieldTrial* SearchProviderTest::CreateFieldTrial(
     const char* field_trial_rule,
     bool enabled) {
   std::map<std::string, std::string> params;
   params[std::string(field_trial_rule)] = enabled ?
       "true" : "false";
   variations::AssociateVariationParams(
       OmniboxFieldTrial::kBundledExperimentFieldTrialName, "A", params);
   return base::FieldTrialList::CreateFieldTrial(
       OmniboxFieldTrial::kBundledExperimentFieldTrialName, "A");
@@ skipping 3030 matching lines @@
 }
 
 TEST_F(SearchProviderTest, DoesNotProvideOnFocus) {
   AutocompleteInput input(
       base::ASCIIToUTF16("f"), base::string16::npos, std::string(), GURL(),
       metrics::OmniboxEventProto::INVALID_SPEC, false, true, true, true, true,
       ChromeAutocompleteSchemeClassifier(&profile_));
   provider_->Start(input, false);
   EXPECT_TRUE(provider_->matches().empty());
 }