Remove fake data

Missed one location that adds fake data
to the payload the first time these were
removed. This patch removes any remaining
fake data being attached to a survey payload.

Test: Robotests still pass
Bug: 34716378
Change-Id: Iccb60ce24ae5c494dcd287107f8d293f4a56b2d5
Merged-In: I055c2b2e027f721e14ea5b6b7efccd5267018b8c