Rubocop cleanup - removing individual directory .rubocop.yml files
Rubocop cleanup - removing individual directory .rubocop.yml files

- Remove .rubocop.yml file from attributes directory.
- This is already managed by the single .rubocop.yml file ~/.rubocop.yml

Change-Id: Iee05b4f23d7fd20f45ad64f50b1f9eeb19c151f3
Addresses: blueprint rubocop-for-common

SpringerPE/cookbook-openstack-common,krtyyy/cookbook-openstack-common,openstack/cookbook-openstack-common,mancdaz/cookbook-openstack-common,tomzo/cookbook-openstack-common,tomzo/cookbook-openstack-common,krtyyy/cookbook-openstack-common,krtyyy/cookbook-openstack-common,tomzo/cookbook-openstack-common,openstack/cookbook-openstack-common