type_cast only accepts one param now

Author: enebo

test/db/postgresql/simple_test.rb

@@ -209,8 +209,8 @@ def test_extensions
   end
 
   test 'type cast (without column)' do
-    assert_equal 1, connection.type_cast(1, false)
-    assert_equal 'some', connection.type_cast(:some, nil)
+    assert_equal 1, connection.type_cast(1)
+    assert_equal 'some', connection.type_cast(:some)
   end
 
   # def test_jdbc_error