Fixes multiple lgtm issues (#45629)

Most of the issues were just inclusions of code that were not used.
This cleans those up. Other alerts were semi-false-positives for now

lib/ansible/module_utils/network/f5/compare.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2017 F5 Networks Inc.
+# GNU General Public License v3.0 (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+
+def cmp_simple_list(want, have):
+    if want is None:
+        return None
+    if have is None and want == '':
+        return None
+    if have is not None and want == '':
+        return []
+    if have is None:
+        return want
+    if set(want) != set(have):
+        return want
+    return None