unset method
Removes data to the configs
Use path
to access to a specific key
Map<String, dynamic> map = { 'a': 1, 'b': {'c': 2}};
GlobalConfigs.loadFromMap(map);
GlobalConfigs().unset('b'); // { 'a': 3}
```dart
Implementation
void unset(String path) => configs = gato.unset(configs, path);