delete method
Deletes a value from secure storage and removes it from cache.
This method calls the native platform implementation to delete the stored value and removes it from the in-memory cache.
key The storage key to delete.
Returns a Future that completes when the value is deleted.
Example
await store.delete(CalljmpStoreKey.accessToken);
Implementation
@override
Future<void> delete(CalljmpStoreKey key) async {
await methodChannel.invokeMethod("secureDelete", {"key": key.name});
_cache.remove(key);
}