providers/proxy: remove deprecated field

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/providers/proxy/api.py

@@ -90,12 +90,6 @@ class ProxyOutpostConfigSerializer(ModelSerializer):
     """Proxy provider serializer for outposts"""
 
     oidc_configuration = SerializerMethodField()
-    forward_auth_mode = SerializerMethodField()
-
-    def get_forward_auth_mode(self, instance: ProxyProvider) -> bool:
-        """Legacy field for 2021.5 outposts"""
-        # TODO: remove in 2021.7
-        return instance.mode in [ProxyMode.FORWARD_SINGLE, ProxyMode.FORWARD_DOMAIN]
 
     class Meta:
 
@@ -117,8 +111,6 @@ class ProxyOutpostConfigSerializer(ModelSerializer):
             "basic_auth_user_attribute",
             "mode",
             "cookie_domain",
-            # Legacy field, remove in 2021.7
-            "forward_auth_mode",
         ]
 
     @extend_schema_field(OpenIDConnectConfigurationSerializer)

schema.yml

@@ -26694,13 +26694,8 @@ components:
             Exclusive with internal_host.
         cookie_domain:
           type: string
-        forward_auth_mode:
-          type: boolean
-          readOnly: true
-          deprecated: true
       required:
       - external_host
-      - forward_auth_mode
       - name
       - oidc_configuration
       - pk