Miscellaneous pylint fixes.

The following rules are no longer disabled:

- bad-format-string
- duplicate-key
- lost-exception
- trailing-newlines
- unexpected-keyword-arg
- useless-suppression
- using-constant-test

lib/ansible/module_utils/redhat.py

@@ -147,11 +147,6 @@ class Rhsm(RegistrationBase):
               * Boolean - whether the current system is currently registered to
                           RHN.
         '''
-        # Quick version...
-        if False:
-            return os.path.isfile('/etc/pki/consumer/cert.pem') and \
-                os.path.isfile('/etc/pki/consumer/key.pem')
-
         args = ['subscription-manager', 'identity']
         rc, stdout, stderr = self.module.run_command(args, check_rc=False)
         if rc == 0: