Create a file in your /hooks files: YOURTABLENAME-dv.js

$j(function() {
  $j("form > .page-header").hide()
});

You can use .remove() instead of .hide().

If you want to keep the [Add new]-button, try the following code:

$j(function() {
  $j("form > .page-header > h1 > .row > div > a").remove()
});