Soft-delete a custom voice that was created via POST /v1/voices/clone. The voice is removed from your active set and the corresponding custom_voice_slot becomes available for a new clone.
After deletion, the same voice_id returns 404 on subsequent requests. Only the owner of the voice may delete it; other users receive 404.
Returns 204 No Content on success.
X-API-KEYstringheaderrequiredAPI key for authentication. You can obtain an API key from the Typecast API Console.
voice_idstringrequiredCustom voice identifier with the uc_ prefix.