Remove annoying google_unbundled log span in build

Summary: Change-Id: Ie584822347d0363e8b1afa0a224be440296de13f

Test Plan: should be fine

Reviewers: Mustaavalkosta, randall.rushing, michyprima, rlasalle15, Roach, synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D248