diff --git a/activerecord/test/connections/native_oracle/connection.rb b/activerecord/test/connections/native_oracle/connection.rb
index b77cc940b6..99f921879c 100644
--- a/activerecord/test/connections/native_oracle/connection.rb
+++ b/activerecord/test/connections/native_oracle/connection.rb
@@ -33,15 +33,3 @@ ActiveRecord::Base.configurations = {
 ActiveRecord::Base.establish_connection 'arunit'
 Course.establish_connection 'arunit2'
 
-# for assert_queries test helper
-ActiveRecord::Base.connection.class.class_eval do
-  IGNORED_SELECT_SQL = [/^select .*nextval/i, /^SAVEPOINT/, /^ROLLBACK TO/, /^\s*select .* from ((all|user)_tab_columns|(all|user)_triggers|(all|user)_constraints)/im]
-
-  def select_with_query_record(sql, name = nil, binds = [])
-    $queries_executed ||= []
-    $queries_executed << sql unless IGNORED_SELECT_SQL.any? { |r| sql =~ r }
-    select_without_query_record(sql, name, binds)
-  end
-
-  alias_method_chain :select, :query_record
-end