Remove old task retry mechanism

Closes #1710 (closed)

Prevents a user to update a task to pending state.

arkindex/ponos/api.py

@@ -156,8 +156,6 @@ class TaskArtifactDownload(APIView):
         description=dedent("""
         Update a task.
 
-        State can only be updated from running to stopping using this endpoint.
-
         Requires **admin** access on the task's process, or to be the creator of the process.
         Cannot be used with Ponos agent or task authentication.
         """),
@@ -166,8 +164,6 @@ class TaskArtifactDownload(APIView):
         description=dedent("""
         Partially update a task.
 
-        State can only be updated from running to stopping using this endpoint.
-
         Requires **admin** access on the task's process, or to be the creator of the process.
         Cannot be used with Ponos agent or task authentication.
         """),