Remove the role_chain.py module

it wound up being unworkable, and I think ultimately we only need to
check the immediate parentage of each role.

tools/scripts/ig-hotfix/role_chain.py

@@ -1,54 +0,0 @@
-from collections import defaultdict
-import os
-import sys
-
-from django.contrib.contenttypes.models import ContentType
-
-from awx.main.fields import ImplicitRoleField
-from awx.main.models.rbac import Role
-
-
-role_id = int(os.environ.get('role'))
-role = Role.objects.get(id=role_id)
-
-all_roles = {role,}
-graph = defaultdict(set)
-
-
-# Role parents
-new_parents = {role,}
-while new_parents:
-    old_parents = new_parents
-    new_parents = set()
-    for r in old_parents:
-        new_parents |= (set(r.parents.all()) - all_roles)
-        for p in r.parents.all():
-            graph[p.id].add(r.id)
-    all_roles |= new_parents
-
-# Role children
-new_children = {role,}
-while new_children:
-    old_children = new_children
-    new_children = set()
-    for r in old_children:
-        new_children |= (set(r.children.all()) - all_roles)
-        for c in r.children.all():
-            graph[r.id].add(c.id)
-    all_roles |= new_children
-
-
-print("digraph G {")
-
-for r in sorted(all_roles, key=lambda x: x.id):
-    if r.content_type is None:
-        print(f'    {r.id} [shape=box,label="id={r.id}\lsingleton={r.singleton_name}\l"]')
-    else:
-        print(f'    {r.id} [shape=box,label="id={r.id}\lct={r.content_type}\lobject_id={r.object_id}\lrole_field={r.role_field}\l"]')
-
-print()
-for p_id, children in sorted(graph.items()):
-    for c_id in children:
-        print(f"    {p_id} -> {c_id}")
-
-print("}")