Prevent dup'd timeout msgs for wait-for-device

Bug: 170485528
Test: Looking at build.log from presubmit (doesn't repro outside)
Change-Id: I724e7d3ab93e645b990c5b04eaf24e0a8c008ab7
1 file changed
tree: 7eb9d8d85423649b42d78aa2ab44c27970b59cf1
  1. project/
  2. .clang-format
  3. LICENSE
  4. PREUPLOAD.cfg