AUI-1270 Remove date normalization code once YUI releases the appropriate fix

The fix for this was already released by YUI, so we don't need this extra code for normalizing the dates.
AUI-1299 Ignore a few test cases on touch enabled devices

Some test cases in the test file for the aui-carousel module should only be run on browsers that are not touch enabled. The aui-carousel-touch module will do the right checks for touch enabled browsers.