Remove Option to Allow trackbacks and pingbacks when Editing Posts in WordPress

remove-replace-discussion-metabox.php

<?php

/*
** Disable Existing Discussion MetaBox
*/
add_action( 'admin_menu', 'remove_discussion_meta_box' );
function remove_discussion_meta_box()
{
  remove_meta_box( 'commentstatusdiv', 'post', 'normal' );
}
/*
** Create New MetaBox
*/
add_action( 'add_meta_boxes', 'add_custom_discussion_meta_box' );
function add_custom_discussion_meta_box()
{
  add_meta_box( 'custom_discussion', __( 'Discussion' ), 'custom_discussion_meta_box', 'post' );
}
/*
** New Discussion MetaBox Content
*/
function custom_discussion_meta_box( $post )
{
	if ( $post->comment_status == "open" )
	{
		$discussion_comments_checked = 'checked="checked"';
	}
	echo '<input name="advanced_view" type="hidden" value="1" />
	<p class="meta-options">
		<input name="comment_status" type="checkbox" id="comment_status" value="open" '.$discussion_comments_checked.' /> <label for="comment_status" class="selectit">Allow comments</label>
		<input name="ping_status" type="hidden" id="ping_status" value="' . $post->ping_status . '" />' . do_action( "post_comment_status_meta_box-options", $post ) . '
	</p>';
}

?>

remove-trackbacks-pingbacks.php

<?php

/*
** Remove 'Allow Trackbacks/Pingbacks' from Quick Edit
*/
add_action( 'admin_head-edit.php', 'remove_pings_quickedit' );
function remove_pings_quickedit()
{
  global $current_screen;
  if ( 'edit-post' != $current_screen->id )
  {
    return;
    echo '<script>
      jQuery(document).ready(function($)
      {
        $(\'span:contains("Allow Pings")\').each(function (i)
        {
          $(this).remove();
        });
        $(\'input[name=ping_status]\').each(function (i)
        {
          $(this).remove();
        });
      });    
    </script>';
  }
}

?>