Deprecate dead code locale_translation_manual_status()

Problem/Motivation

The function locale_translation_manual_status() was a helper function for local_menu() that is no longer used anywhere in the D8 codebase. All hook_menu implementations have been removed → .

The same functionality that was provided by this dead code is now provided by locale.translate_status in local.routing.yml which instantiates TranslationStatusForm in src/Form/TranslationStatusForm.php.

Proposed resolution

As suggested by #11 and #12, please follow the instructions on https://www.drupal.org/core/deprecation → to deprecate locale_translation_manual_status function.

Remaining tasks

• Create change record that describes the why and the alternatives. See https://www.drupal.org/core/deprecation →
• Update the code to point to the change record.