Revert "Throw exception when "date_widget" option is not equal to "ti…

…me_widget""

This reverts commit 3c2539f.

Conflicts:

	tests/Symfony/Tests/Component/Form/Extension/Core/Type/DateTimeTypeTest.php

Extension/Core/Type/DateTimeType.php

@@ -16,7 +16,6 @@
 use Symfony\Component\Form\FormBuilder;
 use Symfony\Component\Form\FormView;
 use Symfony\Component\Form\ReversedTransformer;
-use Symfony\Component\Form\Exception\FormException;
 use Symfony\Component\Form\Extension\Core\DataTransformer\DataTransformerChain;
 use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeToArrayTransformer;
 use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeToStringTransformer;
@@ -41,10 +40,6 @@ public function buildForm(FormBuilder $builder, array $options)
             $timeParts[] = 'second';
         }
 
-        if ($options['date_widget'] !== $options['time_widget']) {
-            throw new FormException(sprintf('Options "date_widget" and "time_widget" need to be identical. Used: "date_widget" = "%s" and "time_widget" = "%s".', $options['date_widget'] ?: 'choice', $options['time_widget'] ?: 'choice'));
-        }
-
         if ($options['widget'] === 'single_text') {
             $builder->appendClientTransformer(new DateTimeToStringTransformer($options['data_timezone'], $options['user_timezone'], $format));
         } else {