python3-psutil: Fix native dependencies
The tests package has many dependencies which don't BBCLASSEXTEND to native
well. Remove these as we're not interested in the tests in the native case anyway.
(From OE-Core rev: 2885ab7c5b58a8f8ff183360e239d2a36270c662)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>