remove crowd-sourced label from nl

fixes CNVS-14247

test-plan:
 - login to canvas
 - open profile page
 - edit
 - check language dropdown
 - "Nederlands" should not have "crowd-sourced" label

Change-Id: I2c353b717ad767852609cc5c968a2afab8a4826a
Reviewed-on: https://gerrit.instructure.com/39773
Reviewed-by: Rob Orton <rob@instructure.com>
QA-Review: August Thornton <august@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Jacob Fugal <jacob@instructure.com>