We've not been using this for long since we introduced the tox targets for doc lint and build. Also remove .gitignore in the subdirectory to maintain ignored files in a single place. Change-Id: Ib1779deb1b7fecbaf04766cae506ae5a25dafec4 Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>