This reverts commit d572f52a; the
idea to detect that "test_cmp expect actual" was fed a misspelt
filename meant well, but when the version of Git tested exhibits a
bug, the reason why these two files do not match may be because one
of them did not get created as expected, in which case missing file
is not a sign of misspelt filename but is a genuine test failure.
Acked-by: NEric Sunshine <sunshine@sunshineco.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>