Remove some more dead code

Change-Id: Icf0c1a9c5e819bd2253d9a631e1ff6875bfd5200
Related-Bug: #1881114

hooks/maas.py

@@ -1,81 +0,0 @@
-# Copyright 2016 Canonical Ltd
-#
-# 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.
-
-import apt_pkg as apt
-
-import json
-import subprocess
-
-from charmhelpers.fetch import apt_install
-from charmhelpers.core.hookenv import (
-    log,
-    ERROR,
-)
-
-MAAS_STABLE_PPA = 'ppa:maas-maintainers/stable '
-MAAS_PROFILE_NAME = 'maas-juju-hacluster'
-
-
-class MAASHelper(object):
-
-    def __init__(self, url, creds):
-        self.url = url
-        self.creds = creds
-        self.install_maas_cli()
-
-    def install_maas_cli(self):
-        """Ensure maas-cli is installed
-
-        Fallback to MAAS stable PPA when needed.
-        """
-        apt.init()
-        cache = apt.Cache()
-
-        try:
-            pkg = cache['maas-cli']
-        except KeyError:
-            cmd = ['add-apt-repository', '-y', MAAS_STABLE_PPA]
-            subprocess.check_call(cmd)
-            cmd = ['apt-get', 'update']
-            subprocess.check_call(cmd)
-            self.install_maas_cli()
-            return
-
-        if not pkg.current_ver:
-            apt_install('maas-cli', fatal=True)
-
-    def login(self):
-        cmd = ['maas-cli', 'login', MAAS_PROFILE_NAME, self.url, self.creds]
-        try:
-            subprocess.check_call(cmd)
-        except subprocess.CalledProcessError:
-            log('Could not login to MAAS @ %s.' % self.url, ERROR)
-            return False
-
-    def logout(self):
-        cmd = ['maas-cli', 'logout', MAAS_PROFILE_NAME]
-        subprocess.check_call(cmd)
-
-    def list_nodes(self):
-        self.login()
-
-        try:
-            cmd = ['maas-cli', MAAS_PROFILE_NAME, 'nodes', 'list']
-            out = subprocess.check_output(cmd).decode('utf-8')
-        except subprocess.CalledProcessError:
-            log('Could not get node inventory from MAAS.', ERROR)
-            return False
-
-        self.logout()
-        return json.loads(out)