This isn't present on modern distros by default and doesn't work with
testtools, needing multiple code paths in the code. Remove it in favour
of finding a better replacement for results collection/analysis.
(From OE-Core rev: 8001d933a8dc86004db014777f094d718086687d)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>