Revert "example-assigneeValidator"

This reverts commit de63cab44077c0ccc7bebf89b344b7024b4ca66d.

Example is already covered in following change:
https://gerrit-review.googlesource.com/#/c/91585/

Change-Id: I06529b362c1b532032e9222bda9538c288758ce2
17 files changed