[Bookmark] Remove unused strings in components

BUG=690075
TEST=builds

Review-Url: https://codereview.chromium.org/2680843009
Cr-Commit-Position: refs/heads/master@{#449271}
diff --git a/components/bookmark_component_strings.grdp b/components/bookmark_component_strings.grdp
index efd4777..523d2a6a5 100644
--- a/components/bookmark_component_strings.grdp
+++ b/components/bookmark_component_strings.grdp
@@ -26,27 +26,9 @@
     </message>
   </if>
   <if expr="is_ios">
-    <message name="IDS_BOOKMARK_FOLDER_CHOOSER_TITLE" desc="Title of the window the bookmark folder chooser is in.">
-      Choose Folder
-    </message>
     <message name="IDS_BOOKMARK_ADD_EDITOR_TITLE" desc="Title of the window the bookmark editor is in when adding a bookmark. [Length: 10em]">
       Add Bookmark
     </message>
-    <message name="IDS_BOOKMARK_NEW_FOLDER_BUTTON_TITLE" desc="Title for button to create a new folder in Bookmarks [Length: 14em]">
-      New Folder
-    </message>
-    <message name="IDS_BOOKMARK_FOLDER_EDITOR_TITLE" desc="Title of the window the bookmark folder editor is in.">
-      Edit Folder
-    </message>
-    <message name="IDS_BOOKMARK_MANAGER_FOLDER_SECTION" desc="The label for the folder section when editing or creating bookmarks on a phone.">
-      In Folder:
-    </message>
-    <message name="IDS_BOOKMARK_MANAGER_FOLDER_TITLE" desc="The label for the folder selector field when editing or creating bookmarks.">
-      Folder
-    </message>
-    <message name="IDS_BOOKMARK_MANAGER_REMOVE_TITLE" desc="The label for the remove button when editing bookmarks.">
-      Remove
-    </message>
   </if>
   <message name="IDS_TOOLTIP_STAR" desc="The tooltip shown when you hover the star button in the right side of the location bar.">
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