re-remove korean translation

this fixes the build

Change-Id: I8e9b0fbff9370c2ee1eda484d0b7e6bda03556b4
Reviewed-on: https://gerrit.instructure.com/42578
Reviewed-by: Cody Cutrer <cody@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>
Tested-by: Cody Cutrer <cody@instructure.com>