Revert "XWIKI-15128: Upgrade to CSS4J 0.40"
Revert "XWIKI-15128: Upgrade to CSS4J 0.40"

This reverts commit 0ecdabd1a1b8d1aae7e99eeee1b91ee7e1436691.

xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform