Remove js file by template or add condition in info file
You can use hook_js_alter()

Perform necessary alterations to the JavaScript before it is presented on the page.
Parameters
$javascript: An array of all JavaScript being presented on the page.

Then you should be able to use menu_get_object() to load the node type and unset the js file in the $javascript array.
function MYTHEME_js_alter($javascript) {
  $node = menu_get_object();
  if ($node-&gt;type == 'node_type) {
    unset($javascript['path/to/script.js']);
  }
}

Note: I haven't tested this or checked syntax, let me know if it doesn't work and I will test.