Enyo-2844 : designerHeightInput shows a strange view in designer(deimos)
- delete classes property of InputDecorator for height input

ENYO-DCO-1.1-Signed-off-by: Kiwook Shim <kiwook.shim@lge.com>
Merge pull request #453 from enyojs/ENYO-2844-kiwook

Enyo-2844 : designerHeightInput shows a strange view in designer(deimos)