Refactor: Handling - "if get_parent_container_for_device() returns None" inside reset_device()

[Shivani-chourasiya]

Change Summary

Removed the check for 'parentContainerId' from reset_device() method to resolve issue #239

Related Issue(s)

Fixes #239

[carlbuchmann]

@tgodaA - please review when you have a moment!