SEP-2663: Remove task examples and reformat

Author: LucaButBoring

docs/docs.json

@@ -427,16 +427,16 @@
               "seps/2148-contributor-ladder",
               "seps/2149-working-group-charter-template",
               "seps/2243-http-standardization",
-              "seps/2567-sessionless-mcp"
+              "seps/2567-sessionless-mcp",
+              "seps/2663-tasks-extension"
             ]
           },
           {
             "group": "Accepted",
             "pages": [
               "seps/2207-oidc-refresh-token-guidance",
               "seps/2260-Require-Server-requests-to-be-associated-with-Client-requests",
-              "seps/2575-stateless-mcp",
-              "seps/2663-tasks-extension"
+              "seps/2575-stateless-mcp"
             ]
           },
           {

docs/seps/2663-tasks-extension.mdx

@@ -228,16 +228,13 @@ buffer. Without this header, proxies may accumulate messages before sending
 them to the client, introducing unwanted latency and potentially breaking the
 real-time nature of SSE communication.
 
-For workloads that need durability across connection drops, use the
-[tasks primitive][tasks]; resumable SSE
-streams via `Last-Event-ID` are not supported.
+Resumable SSE streams via `Last-Event-ID` are not supported.
 
 [notifications-progress]: /specification/draft/basic/utilities/progress
 [notifications-message]: /specification/draft/server/utilities/logging
 [incomplete-result]: /specification/draft/schema#inputrequiredresult
 [sep-2322]: /seps/2322-MRTR
 [subscriptions-listen]: /specification/draft/basic/utilities/subscriptions
-[tasks]: /specification/draft/basic/utilities/tasks
 
 ### Cancellation