diff --git a/activerecord/lib/active_record/acts/nested_set.rb b/activerecord/lib/active_record/acts/nested_set.rb
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/activerecord/lib/active_record/acts/tree.rb b/activerecord/lib/active_record/acts/tree.rb
deleted file mode 100644
index e69de29bb2..0000000000