Removes duplicate jQuery request

jQuery is loaded twice. Firstly in the `_layouts/default.html` file and then secondly through the modernizer.load in `i/js/modernizr.com-custom-2.6.1-01.js`

1.7 is loaded via yepnope and 1.7.2 is loaded via the default layout.

Should be as simple as removing the jQuery loaded in default.html?