[Cleanup] Remove some expired omnibox field trials.

components/omnibox/browser/omnibox_field_trial_unittest.cc

Index: components/omnibox/browser/omnibox_field_trial_unittest.cc
diff --git a/components/omnibox/browser/omnibox_field_trial_unittest.cc b/components/omnibox/browser/omnibox_field_trial_unittest.cc
index 77f903d26995e44b0c1462f67d64a4fffd70ccd2..44f831bc629f98b894dfa2cd80235f3b75a3922c 100644
--- a/components/omnibox/browser/omnibox_field_trial_unittest.cc
+++ b/components/omnibox/browser/omnibox_field_trial_unittest.cc
@@ -139,12 +139,6 @@ TEST_F(OmniboxFieldTrialTest, GetDisabledProviderTypes) {
   EXPECT_EQ(0, OmniboxFieldTrial::GetDisabledProviderTypes());
 
   {
-    SCOPED_TRACE("Outside the bundled field trial.");
-    CreateTestTrial("AutocompleteDynamicTrial_0", "DisabledProviders_123");
-    EXPECT_EQ(0, OmniboxFieldTrial::GetDisabledProviderTypes());
-  }
-
-  {
     SCOPED_TRACE("Valid field trial, missing param.");
     ResetFieldTrialList();
     std::map<std::string, std::string> params;