[PATCH] tests: silence obsolete warning

[Sean Farley]

timeless <timeless at fmr.im> writes:

> # HG changeset patch
> # User timeless <timeless at mozdev.org>
> # Date 1462327878 0
> #      Wed May 04 02:11:18 2016 +0000
> # Node ID 4dcc4586ef9015556825a82819ffbc231e5cf79a
> # Parent  fe50341de1fff843ae633d7ad7be908100c09cdc
> # Available At bb://timeless/mercurial-crew
> #              hg pull bb://timeless/mercurial-crew -r 4dcc4586ef90
> tests: silence obsolete warning
>
> Matt Harbison and I regularly hit these warnings.
>
> We discussed the problem in mid-April.

I'm not opposed to this patch but I am perplexed as to why it's
happening.