circleci: auditwheel already installed in manylinux image
circleci: auditwheel already installed in manylinux image

re-installing was causing the following error:

Traceback (most recent call last):
  File "/opt/python/cp27-cp27m/bin/auditwheel", line 7, in <module>
    from auditwheel.main import main
  File "/opt/_internal/cpython-2.7.15-ucs2/lib/python2.7/site-packages/auditwheel/main.py", line 8, in <module>
    from . import main_addtag
  File "/opt/_internal/cpython-2.7.15-ucs2/lib/python2.7/site-packages/auditwheel/main_addtag.py", line 49
    print('\n%s.' % str(e), file=sys.stderr)
                                ^

jcfr/ci-sandbox,jcfr/ci-sandbox