pkg mods: latest_version: (1) always allow refresh arg (2) error on invalid kwargs
Remove unused kwargs

Fixes #7213.
salt/modules/mac_user.py:11: [W0611(unused-import), ] Unused import copy
salt/states/user.py:31: [W0611(unused-import), ] Unused import salt
salt/modules/useradd.py:7: [W0611(unused-import), ] Unused import sys
salt/modules/useradd.py:19: [W0611(unused-import), ] Unused import _callable
salt/modules/bluez.py:16: [W0611(unused-import), ] Unused import salt
salt/client/api.py:7: [W0611(unused-import), ] Unused import inspect
Merge pull request #7229 from hulu/unused-import

rm unused imports reported by pylint
Merge pull request #7216 from hulu/pkg-refresh

pkg mods: latest_version: (1) always allow refresh arg (2) error on invalid kwargs
Merge pull request #7228 from terminalmage/issue7213

Remove unused kwargs
Merge branch 'develop' into with-pylint-pragmas