Suppress bug 1269940 from the graphs page

It is another manifestation of aborted jobs.  See
If381e36144ffc03c0e36d3eb74ad7f24db245aa6 for full rationale.

Change-Id: I4942b841d6aeeb327cdc6fb05cb0b59e75dafb10
Merge "Suppress bug 1269940 from the graphs page"