@sneha_surve :
Just to update you that this install file will not be require...

@sneha_surve :

Just to update you that this install file will not be required any more, Because Drupal automatically deletes the configurations from 'config' table when we uninstall the module.

@polaki_viswanath : you have created a 8.x branch, However the issue queue's version filter will not show '8.x-1.x' because this branch is not associated with any module release.
So if possible you should create a development release associated with 8.x branch. That way you can version the D8 port Issues to 8.x-1.x.