To remove pricing from your Cross Sell products :

1. Open catalog/includes/modules/xsell_products.php

2. Comment out line 30 - 39 :

 $xsell?'specials_new_products_price' = tep_get_products_special_price($xsell?'products_id');
 
if ($xsell?'specials_new_products_price') {
 
      $xsell_price =  '<s>' . $currencies->display_price($xsell?'products_price',
 tep_get_tax_rate($xsell?'products_tax_class_id')) . '</s><br>';
 
      $xsell_price .= '<span class="productSpecialPrice">' .
 $currencies->display_price($xsell?'specials_new_products_price',
 tep_get_tax_rate($xsell?'products_tax_class_id')) . '</span>';
 
    } else {
 
      $xsell_price =  $currencies->display_price($xsell?'products_price',
 tep_get_tax_rate($xsell?'products_tax_class_id'));
 
    }