Revert "Temporarily increase the URL fetcher limit to 100 MB"
Revert "Temporarily increase the URL fetcher limit to 100 MB"

This reverts commit 3282c0c9f5d9ac9a2fabc309eb5b5e58326bfe5d.

berkmancenter/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud