test-lib: Remove 3 year old no-op --no-python option
The --no-python option was added to test-lib.sh by Johannes Schindelin
in early 2006 in
abb7c7b3. It was later turned into a no-op by Junio C
Hamano in
7cdbff14 the same year.
Over three years is long enough before removing this old wart which
was retained for backwards compatibility. Our tests have been using
NO_PYTHON and "test_have_prereq PYTHON" for a long time now.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>