chore: remove extra bash line

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2020-05-20 05:18:44,496 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/python-runtimeconfig/synth.py.
On branch autosynth
nothing to commit, working tree clean
.coveragerc
.flake8
.github/CONTRIBUTING.md
.github/ISSUE_TEMPLATE/bug_report.md
.github/ISSUE_TEMPLATE/feature_request.md
.github/ISSUE_TEMPLATE/support_request.md
.github/PULL_REQUEST_TEMPLATE.md
.github/release-please.yml
.gitignore
.kokoro/build.sh
.kokoro/continuous/common.cfg
.kokoro/continuous/continuous.cfg
.kokoro/docs/common.cfg
.kokoro/docs/docs.cfg
.kokoro/presubmit/common.cfg
.kokoro/presubmit/presubmit.cfg
.kokoro/publish-docs.sh
.kokoro/release.sh
.kokoro/release/common.cfg
.kokoro/release/release.cfg
.kokoro/trampoline.sh
CODE_OF_CONDUCT.md
CONTRIBUTING.rst
LICENSE
MANIFEST.in
docs/_static/custom.css
docs/_templates/layout.html
docs/conf.py.j2
docs/multiprocessing.rst
noxfile.py.j2
renovate.json
setup.cfg
Running session blacken
Creating virtual environment (virtualenv) using python3.6 in .nox/blacken
pip install black==19.3b0
black docs google tests noxfile.py setup.py
reformatted /home/kbuilder/.cache/synthtool/python-runtimeconfig/docs/conf.py
reformatted /home/kbuilder/.cache/synthtool/python-runtimeconfig/noxfile.py
All done! ✨ 🍰 ✨
2 files reformatted, 15 files left unchanged.
Session blacken was successful.
2020-05-20 05:18:47,567 synthtool [DEBUG] > Wrote metadata to synth.metadata.