test(neon): remove pillar and tests for `v3000`

test/integration/v3000-py2/README.md

test/integration/v3000-py2/controls/_mapdata.rb

test/integration/v3000-py2/controls/pkgs_spec.rb

test/integration/v3000-py2/controls/service_spec.rb

test/integration/v3000-py2/files/_mapdata/ubuntu-18.yaml

test/integration/v3000-py2/inspec.yml

test/integration/v3000-py3/README.md

test/integration/v3000-py3/controls/_mapdata.rb

test/integration/v3000-py3/controls/pkgs_spec.rb

test/integration/v3000-py3/controls/service_spec.rb

test/integration/v3000-py3/files/_mapdata/amazonlinux-2.yaml

test/integration/v3000-py3/files/_mapdata/centos-7.yaml

test/integration/v3000-py3/files/_mapdata/centos-8.yaml

test/integration/v3000-py3/files/_mapdata/debian-10.yaml

test/integration/v3000-py3/files/_mapdata/debian-9.yaml

test/integration/v3000-py3/files/_mapdata/gentoo-2-sysd.yaml

test/integration/v3000-py3/files/_mapdata/gentoo-2-sysv.yaml

test/integration/v3000-py3/files/_mapdata/opensuse-15.yaml

test/integration/v3000-py3/files/_mapdata/oraclelinux-7.yaml

test/integration/v3000-py3/files/_mapdata/oraclelinux-8.yaml