svn commit: r80552 - release/arrow/apache-arrow-adbc-20

[lidavidm]

Author: lidavidm
Date: Fri Nov  7 02:43:21 2025
New Revision: 80552

Log:
Remove old Apache Arrow ADBC release: apache-arrow-adbc-20/

Deleted:
   release/arrow/apache-arrow-adbc-20/