deprecated nsfw using property

Author: Lumabots

discord/channel.py

@@ -2864,7 +2864,6 @@ def _update(self, guild: Guild, data: CategoryChannelPayload) -> None:
         self.guild: Guild = guild
         self.name: str = data["name"]
         self.category_id: int | None = utils._get_as_snowflake(data, "parent_id")
-        self.nsfw = False
 
         # This data may be missing depending on how this object is being created/updated
         if not data.pop("_invoke_flag", False):
@@ -3077,6 +3076,15 @@ def is_nsfw(self) -> bool:
 
     # TODO: Remove in 3.0
 
+    @utils.deprecated(
+        since="2.7",
+        removed="3.0",
+        reference="Category NSFW was never supported by the API.",
+    )
+    @property
+    def nsfw(self) -> bool:
+        return False
+
 
 DMC = TypeVar("DMC", bound="DMChannel")