delete old version bumping scripts (#1337)

@aaronvg Could you please check for me that we don't use these scripts
anymore?
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> [!IMPORTANT]
> Remove old version bumping scripts `version-bump-release.sh` and
`version-bump.sh`.
> 
>   - **Scripts Deleted**:
>     - Removed `version-bump-release.sh` from `release` directory.
>     - Removed `version-bump.sh` from `release` directory.
> 
> <sup>This description was created by </sup>[<img alt="Ellipsis"
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for 1497492. It will automatically
update as commits are pushed.</sup>

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