Revert "Merge pull request #82 from dimagi/auto-itext-id"

This reverts commit 0aa9d22cfbea8f8c27d2cdb91b0ed65693850f73, reversing
changes made to 72825eca64c657c075eef26735278a85a534fc79.

The behavior of this widget completely changed with the latest vellum changes.