Features workflow issue with deleting a field
The correct way to remove Features-created content is via hook_update_N (which should be implemented in the file your_module.install).



The main idea with Features is to manage configuration with code. Using hook_update_N is consistent with that, since the field deletion is in code (which can be managed with version control) — whereas the equivalent command drush field-delete field is not being called from managed code; it's a separate command-line step you need to perform (and to remember to perform).