[iOS] Remove "Shortcuts" feature.

Removes the feature to show icons instead of ZeroSuggest.

Bug: 888367
Change-Id: I88f7b65f2426b461774173078c825f5d2659f1a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1942088
Reviewed-by: Ilya Sherman <[email protected]>
Reviewed-by: Mark Cogan <[email protected]>
Reviewed-by: Robbie Gibson <[email protected]>
Reviewed-by: Justin Donnelly <[email protected]>
Auto-Submit: Stepan Khapugin <[email protected]>
Commit-Queue: Stepan Khapugin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#728896}
diff --git a/components/omnibox/browser/zero_suggest_provider.cc b/components/omnibox/browser/zero_suggest_provider.cc
index 0b932f5..df84290 100644
--- a/components/omnibox/browser/zero_suggest_provider.cc
+++ b/components/omnibox/browser/zero_suggest_provider.cc
@@ -696,11 +696,8 @@
   const auto field_trial_variants =
       OmniboxFieldTrial::GetZeroSuggestVariants(current_page_classification_);
 
-  if (base::Contains(field_trial_variants, kNoneVariant) ||
-      base::FeatureList::IsEnabled(
-          omnibox::kOmniboxPopupShortcutIconsInZeroState)) {
+  if (base::Contains(field_trial_variants, kNoneVariant))
     return NONE;
-  }
 
   // TODO(tommycli): Since this can be configured via ZeroSuggestVariant, we
   // should eliminate this special case and use a field trial configuration.