svn commit: r78506 - dev/arrow/apache-arrow-rs-56.0.0-rc2

[alamb]

Author: alamb
Date: Fri Aug  1 19:25:46 2025
New Revision: 78506

Log:
Remove old Apache Arrow Rust RC: apache-arrow-rs-56.0.0-rc2/

Deleted:
   dev/arrow/apache-arrow-rs-56.0.0-rc2/