[Issue 20180] Deprecated unittests should not be deprecated functions

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20180

--- Comment #3 from FeepingCreature <default_357-line at yahoo.de> ---
I mean, it'll still be deprecated. The problem isn't determining whether a
unittest is deprecated, the problem is calling it from a nondeprecated
function.

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