Map Control+Delete to Forward Delete
You can do this with Karabiner with a private.xml such as this:

&lt;?xml version="1.0"?&gt;
&lt;root&gt;
  &lt;item&gt;
    &lt;name&gt;Forward Delete with ⌃⌫&lt;/name&gt;
    &lt;identifier&gt;private.ctrlbackspace&lt;/identifier&gt;
    &lt;autogen&gt;
      __KeyToKey__
      KeyCode::DELETE, VK_CONTROL | ModifierFlag::NONE,
      KeyCode::FORWARD_DELETE
    &lt;/autogen&gt;
  &lt;/item&gt;
&lt;/root&gt;