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ARROW-5868: [Python] Correctly remove liblz4 shared libraries from manylinux2010 image so lz4 is statically linked

I pushed the image to Docker Hub (it was on quay.io before). I'm not sure what's the best way to test for this -- I checked the produced wheels locally to verify that liblz4.so is no longer required

Author: Wes McKinney <wesm+git@apache.org>

Closes #4828 from wesm/ARROW-5868 and squashes the following commits:

1fb1acb09 <Wes McKinney> Remove liblz4 shared libraries from /usr/local so static linking occurs