[ios] Show toolbar in ntp header view.

Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I913bc2bbe5d6ef5a2434d44c020c34bf5299343e
Reviewed-on: https://chromium-review.googlesource.com/916712Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536707}

ios/chrome/browser/ui/content_suggestions/content_suggestions_header_view.mm

@@ -34,14 +34,6 @@
   return self;
 }
 
-- (void)traitCollectionDidChange:(UITraitCollection*)previousTraitCollection {
-  [super traitCollectionDidChange:previousTraitCollection];
-  // TODO(crbug.com/808429) This logic is specific to phone.  This will need to
-  // be updated when tablet also shows the |toolBarView|.
-  self.toolBarView.hidden =
-      self.traitCollection.verticalSizeClass == UIUserInterfaceSizeClassRegular;
-}
-
 #pragma mark - NTPHeaderViewAdapter
 
 - (void)addToolbarView:(UIView*)toolbarView {