3rd party auth removal cleanup

- Sequentiallize auth config removal migrations
- Remove references to third party auth
- update license files
- lint fix
- Remove unneeded docs
- Remove unreferenced file
- Remove social auth references from docs
- Remove rest of sso dir
- Remove references to third part auth in docs
- Removed screenshots of UI listing removed settings
- Remove AuthView references
- Remove unused imports
...

Co-Authored-By: jessicamack <21223244+jessicamack@users.noreply.github.com>

awx/api/conf.py

@@ -34,10 +34,7 @@ register(
     'DISABLE_LOCAL_AUTH',
     field_class=fields.BooleanField,
     label=_('Disable the built-in authentication system'),
-    help_text=_(
-        "Controls whether users are prevented from using the built-in authentication system. "
-        "You probably want to do this if you are using an LDAP integration."
-    ),
+    help_text=_("Controls whether users are prevented from using the built-in authentication system. "),
     category=_('Authentication'),
     category_slug='authentication',
 )
@@ -70,20 +67,6 @@ register(
     category_slug='authentication',
     unit=_('seconds'),
 )
-register(
-    'ALLOW_OAUTH2_FOR_EXTERNAL_USERS',
-    field_class=fields.BooleanField,
-    default=False,
-    label=_('Allow External Users to Create OAuth2 Tokens'),
-    help_text=_(
-        'For security reasons, users from external auth providers (LDAP, SSO, '
-        ' and others) are not allowed to create OAuth2 tokens. '
-        'To change this behavior, enable this setting. Existing tokens will '
-        'not be deleted when this setting is toggled off.'
-    ),
-    category=_('Authentication'),
-    category_slug='authentication',
-)
 register(
     'LOGIN_REDIRECT_OVERRIDE',
     field_class=fields.CharField,