deleteById method
Remove por id; retorna se afetou algo.
Implementation
@override
Future<bool> deleteById(String table, Object id) async {
final r = await _client.delete(
Uri.parse('$_base/$table?id=eq.$id'),
headers: {..._headers, 'prefer': 'return=representation'},
);
if (r.statusCode >= 400) return false;
return (jsonDecode(r.body) as List).isNotEmpty;
}