remove multiple ids

datepickers were getting their state all
screwed up

fixes CNVS-4925

Change-Id: I119113e4e5ecfde7bf5ab0a25fa9c05dab2bed76
Reviewed-on: https://gerrit.instructure.com/30065
Reviewed-by: Rob Orton <rob@instructure.com>
QA-Review: August Thornton <august@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Rob Orton <rob@instructure.com>