svn commit: r78505 - dev/arrow/apache-arrow-rs-56.0.0-rc1

[alamb]

Author: alamb
Date: Fri Aug  1 19:25:45 2025
New Revision: 78505

Log:
Remove old Apache Arrow Rust RC: apache-arrow-rs-56.0.0-rc1/

Deleted:
   dev/arrow/apache-arrow-rs-56.0.0-rc1/