delete method
Deletes the file at remotePath from the backend.
Throws if the file does not exist or the caller lacks permission.
Implementation
@override
Future<void> delete(String remotePath) async {
try {
await _storage.ref(remotePath).delete();
} catch (error) {
throw Exception(
'FirebaseStorageUploader.delete failed for '
'"$remotePath": $error',
);
}
}