Backup Migration

Medium risk: 6 removed constants, 3 removed hooks, 2 removed functions.

• The action bmi_premium_remove_backup_file is no longer fired. Any code hooked to it stops running silently.
• The action bmi_premium_remove_backup_json_file is no longer fired. Any code hooked to it stops running silently.
• The action bmp_created_backup is no longer fired. Any code hooked to it stops running silently.
• The function BMI\Plugin\Dashboard\bmi_render_default_config() was removed. Direct calls from a theme or another plugin will fatal.
• The function BMI\Plugin\Dashboard\bmi_try_convert_old_to_new_config() was removed. Direct calls from a theme or another plugin will fatal.
• BMI\Plugin\Scanner\BMI_BackupsScanner::removeOldCache() was removed.
• The constant BMI_CONFIG_PHP is no longer defined.
• The constant BMI_CONFIG_STATUS is no longer defined.
• The constant BMI_CONFIG_PATH is no longer defined.
• The constant BMI_INITIAL_CONFIG_PATH is no longer defined.
• The constant BMI_BACKUPS_DEFAULT is no longer defined.
• The constant BMI_STATIC_PHP_CONFIG is no longer defined.
• The template includes/dashboard/templates/backup-row-template.php changed. Any theme override of it is now out of date and will miss the change.