Cleanup ContentSuggestions, removing unused functions

ios/chrome/browser/ui/content_suggestions/BUILD.gn

Index: ios/chrome/browser/ui/content_suggestions/BUILD.gn
diff --git a/ios/chrome/browser/ui/content_suggestions/BUILD.gn b/ios/chrome/browser/ui/content_suggestions/BUILD.gn
index 5e2ce30001bf8f5deba2e61d5e3ef1a2a5a9f8fb..e35648be6636c579ed4b6abcd337bcf1c2881e23 100644
--- a/ios/chrome/browser/ui/content_suggestions/BUILD.gn
+++ b/ios/chrome/browser/ui/content_suggestions/BUILD.gn
@@ -20,14 +20,14 @@ source_set("content_suggestions") {
     "content_suggestions_favicon_internal_cell.mm",
     "content_suggestions_favicon_item.h",
     "content_suggestions_favicon_item.mm",
-    "content_suggestions_item.h",
-    "content_suggestions_item.mm",
-    "content_suggestions_item_actions.h",
     "content_suggestions_section_information.h",
     "content_suggestions_section_information.mm",
     "content_suggestions_stack_item.h",
     "content_suggestions_stack_item.mm",
     "content_suggestions_stack_item_actions.h",
+    "content_suggestions_text_item.h",
+    "content_suggestions_text_item.mm",
+    "content_suggestions_text_item_actions.h",
     "content_suggestions_view_controller.h",
     "content_suggestions_view_controller.mm",
     "expandable_item.h",
@@ -52,8 +52,8 @@ source_set("unit_tests") {
     "content_suggestions_article_item_unittest.mm",
     "content_suggestions_expandable_item_unittest.mm",
     "content_suggestions_favicon_item_unittest.mm",
-    "content_suggestions_item_unittest.mm",
     "content_suggestions_stack_item_unittest.mm",
+    "content_suggestions_text_item_unittest.mm",
   ]
   deps = [
     ":content_suggestions",