Fix behavior of automatically adding 'Cq-Include-Trybots' in presubmit

NoTry: true
Bug: skia:7041
Change-Id: I4660db5e9526b29e2135bf4d5f0d134f1f9a5dce
Reviewed-on: https://skia-review.googlesource.com/45880
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
1 file changed