os/exec: delete TestExtraFilesFDShuffle
This test has been disabled for over nine years (since CL
12869049).
Although it still compiles, it seems likely to have rotted since then,
and if it was going to detect a real bug it also seems like that bug
would have been encountered and reported by users since then (and
would presumably have its own regression tests).
To eliminate overhead from mainining it (or skipping over it while
maintaining other tests), let's just delete it.
Fixes #5780.
Change-Id: I2a85cba20cba98a1dc6fc82336ae5e22d2242e99
Reviewed-on: https://go-review.googlesource.com/c/go/+/439197
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>