script/console is a rails 2 vestigial

and my fingers still want to type it. at least this will remove
it from my tab-complete

Change-Id: Id826cff0612c27bb54dc2c74925193b8f33a66cf
Reviewed-on: https://gerrit.instructure.com/41607
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Rob Orton <rob@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>