Remove privsep/hscli

This was for a driver that is no longer in the tree.

It is also broken -- it refers to an exception class
that doesn't exist (exception.UnableToExecuteHyperScaleCmd).

Change-Id: I856376aa29e076d501ee19cbb386329017363dad

cinder/privsep/hscli.py

@@ -1,44 +0,0 @@
-# Copyright 2018 Red Hat, Inc
-# Copyright (c) 2017 Veritas Technologies LLC.  All rights reserved.
-# Copyright 2017 Rackspace Australia
-# Copyright 2018 Michael Still and Aptira
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-"""
-Helpers for hscli related routines
-"""
-from oslo_concurrency import processutils as putils
-from oslo_log import log as logging
-
-from cinder import exception
-import cinder.privsep
-
-LOG = logging.getLogger(__name__)
-
-
-@cinder.privsep.sys_admin_pctxt.entrypoint
-def hsexecute(cmdarg_json):
-
-    cmd_out = None
-    cmd_err = None
-    try:
-        # call hyperscale cli
-        (cmd_out, cmd_err) = putils.execute("hscli", cmdarg_json)
-    except (putils.UnknownArgumentError, putils.ProcessExecutionError,
-            OSError):
-        LOG.exception("Exception in running the command for %s",
-                      cmdarg_json)
-        raise exception.UnableToExecuteHyperScaleCmd(command=cmdarg_json)
-
-    return (cmd_out, cmd_err)