Use the same design for all suggestions

components/ntp_snippets/reading_list/reading_list_distillation_state_util.h

Index: components/ntp_snippets/reading_list/reading_list_distillation_state_util.h
diff --git a/components/ntp_snippets/reading_list/reading_list_distillation_state_util.h b/components/ntp_snippets/reading_list/reading_list_distillation_state_util.h
deleted file mode 100644
index a00553fc98ab2af28e92b6ce28643d0937ccf1df..0000000000000000000000000000000000000000
--- a/components/ntp_snippets/reading_list/reading_list_distillation_state_util.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2017 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.
-
-#ifndef COMPONENTS_NTP_SNIPPETS_READING_LIST_READING_LIST_DISTILLATION_STATE_UTIL_H_
-#define COMPONENTS_NTP_SNIPPETS_READING_LIST_READING_LIST_DISTILLATION_STATE_UTIL_H_
-
-#include "components/ntp_snippets/content_suggestion.h"
-#include "components/reading_list/core/reading_list_entry.h"
-
-namespace ntp_snippets {
-
-ReadingListEntry::DistillationState ReadingListStateFromSuggestionState(
-    ReadingListSuggestionExtra::ReadingListSuggestionDistilledState
-        distilled_state);
-
-ReadingListSuggestionExtra::ReadingListSuggestionDistilledState
-SuggestionStateFromReadingListState(
-    ReadingListEntry::DistillationState distilled_state);
-
-}  // namespace ntp_snippets
-
-#endif  // COMPONENTS_NTP_SNIPPETS_READING_LIST_READING_LIST_DISTILLATION_STATE_UTIL_H_