[Cleanup] Remove some expired omnibox field trials.

chrome/browser/chrome_browser_field_trials.cc

Index: chrome/browser/chrome_browser_field_trials.cc
diff --git a/chrome/browser/chrome_browser_field_trials.cc b/chrome/browser/chrome_browser_field_trials.cc
index b38abad373b6044c22287436cbbee1a4db543a4c..b4654735a5fb528a597e6c3163cc8370ad99c522 100644
--- a/chrome/browser/chrome_browser_field_trials.cc
+++ b/chrome/browser/chrome_browser_field_trials.cc
@@ -13,7 +13,6 @@
 #include "build/build_config.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/metrics/metrics_pref_names.h"
-#include "components/omnibox/browser/omnibox_field_trial.h"
 
 #if defined(OS_ANDROID) || defined(OS_IOS)
 #include "chrome/browser/chrome_browser_field_trials_mobile.h"
@@ -44,6 +43,4 @@ void ChromeBrowserFieldTrials::InstantiateDynamicTrials() {
   // The following trials are used from renderer process.
   // Mark here so they will be sync-ed.
   base::FieldTrialList::FindValue("DisplayList2dCanvas");
-  // Activate the autocomplete dynamic field trials.
-  OmniboxFieldTrial::ActivateDynamicTrials();
 }