This update removes a duplicate function from the Odoo Enterprise system. The `pushExternalOrderToBlackbox` function was essentially a redundant copy of another existing function, streamlining the codebase. This change improves efficiency and reduces potential for errors.

Remove useless function `pushExternalOrderToBlackbox` that was doing the same as `pushOrderToBlackbox(order, true)`.

This function was introduced in the following PR: https://github.com/odoo/enterprise/pull/102280