deleteToken method
Implementation
Future<bool> deleteToken(List<String> scopes) async {
final serTokens = await storage.read(key);
if (serTokens != null) {
final scopeKey = getScopeKey(scopes);
final tokens = Map.from(jsonDecode(serTokens));
if (tokens.containsKey(scopeKey)) {
tokens.remove(scopeKey);
await storage.write(key, jsonEncode(tokens));
}
}
return true;
}