Make full-form autofill the only implementation on iOS.

ios/chrome/browser/autofill/form_suggestion_controller.mm

Index: ios/chrome/browser/autofill/form_suggestion_controller.mm
diff --git a/ios/chrome/browser/autofill/form_suggestion_controller.mm b/ios/chrome/browser/autofill/form_suggestion_controller.mm
index 71a5d783d5b4e5f1c841b0424d17c1c6c417986c..2499d402ec3c72893d691289023a39e180ae90a0 100644
--- a/ios/chrome/browser/autofill/form_suggestion_controller.mm
+++ b/ios/chrome/browser/autofill/form_suggestion_controller.mm
@@ -13,7 +13,6 @@
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
-#include "components/autofill/core/browser/autofill_field_trial_ios.h"
 #include "components/autofill/core/browser/autofill_popup_delegate.h"
 #import "components/autofill/ios/browser/form_suggestion.h"
 #import "ios/chrome/browser/autofill/form_input_accessory_view_controller.h"
@@ -304,12 +303,7 @@ AutofillSuggestionState::AutofillSuggestionState(const std::string& form_name,
                  forField:base::SysUTF8ToNSString(_suggestionState->field_name)
                      form:base::SysUTF8ToNSString(_suggestionState->form_name)
         completionHandler:^{
-          if (autofill::AutofillFieldTrialIOS::IsFullFormAutofillEnabled()) {
-            [[weakSelf accessoryViewDelegate] closeKeyboardWithoutButtonPress];
-          } else {
-            [[weakSelf accessoryViewDelegate]
-                selectNextElementWithoutButtonPress];
-          }
+          [[weakSelf accessoryViewDelegate] closeKeyboardWithoutButtonPress];
         }];
   _provider = nil;
 }