Remove NativeRunnableDeprecated (#27529)

Summary:
The class was deprecated in 2016 and is blocking an upgrade to fbjni
which no longer supports the `Countable` class this extends.

Changelog:
[Android] [Removed] - NativeRunnableDeprecated
Pull Request resolved: #27529

Test Plan: No references to it in this codebase.

Reviewed By: mdvacca

Differential Revision: D19087074

Pulled By: passy

fbshipit-source-id: a4ee73be7c13cedf1d86d2643f8e788ad4a2e31f

Author: passy