Fixes ENYO-364

## Issue
< IE 11 doesn't support pointer-events so the mouse wheel events are being captured by the floating layer instead of passing through to the underlying controls

## Fix
For the affected browsers, remove the enyo-fit class from enyo.FloatingLayer so it has no height and therefore won't be the target of any events.

Enyo-DCO-1.1-Signed-off-by: Ryan Duffy (ryan.duffy@lge.com)