The update_git_pull_output_with_formulae_changes fixture (which consists
of mocked-up `git pull` output) listed a few files as both updated and
deleted. This caused the test_update_homebrew_with_formulae_changes test to
fail. My guess is that this fixture was mocked-up before formula deletion
handling was introduced, and became broken when it was. This revision just
makes this fixture internally consistent, and allows the associated test to
pass.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>