Remove SpotlightActions experimental flag.

ios/chrome/app/spotlight/actions_spotlight_manager.mm

 // Copyright 2016 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.
 
 #import "ios/chrome/app/spotlight/actions_spotlight_manager.h"
 
 #import <CoreSpotlight/CoreSpotlight.h>
 
 #include "base/mac/foundation_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/sys_string_conversions.h"
 #include "ios/chrome/browser/app_startup_parameters.h"
-#include "ios/chrome/browser/experimental_flags.h"
 #include "ios/chrome/common/app_group/app_group_constants.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "net/base/mac/url_conversions.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
@@ skipping 101 matching lines @@
       dispatch_get_main_queue(), ^{
         ActionsSpotlightManager* strongSelf = weakSelf;
         [strongSelf clearAndAddSpotlightActions];
       });
 }
 
 #pragma mark private methods
 
 - (void)clearAndAddSpotlightActions {
   [self clearAllSpotlightItems:^(NSError* error) {
-    if (!experimental_flags::IsSpotlightActionsEnabled()) {
-      return;
-    }
     __weak ActionsSpotlightManager* weakSelf = self;
     dispatch_after(
         dispatch_time(DISPATCH_TIME_NOW,
                       static_cast<int64_t>(1 * NSEC_PER_SEC)),
         dispatch_get_main_queue(), ^{
           ActionsSpotlightManager* strongSelf = weakSelf;
 
           if (!strongSelf) {
             return;
           }
@@ skipping 42 matching lines @@
   [attributeSet setDisplayName:title];
 
   NSString* domainID =
       spotlight::StringFromSpotlightDomain(spotlight::DOMAIN_ACTIONS);
   NSString* itemID = [NSString stringWithFormat:@"%@.%@", domainID, action];
 
   return [self spotlightItemWithItemID:itemID attributeSet:attributeSet];
 }
 
 @end