Commerce- Is it possible to hide the radio button on payment select with only one payment type?
Here is a more elegant way:

function yourmodulename_form_commerce_checkout_form_review_alter(&amp;$form, &amp;$form_state, $form_id) 
{
   $form['commerce_payment']['#access'] = FALSE;
}


I'm not confident if the payment selector might be put into another form in checkout settings. Then it might be part of the commerce_checkout_form_checkout_alter instead. Then do this:

function yourmodulename_form_commerce_checkout_form_checkout_alter(&amp;$form, &amp;$form_state, $form_id) 
{
    $form['commerce_payment']['#access'] = FALSE;
}