openapi: remove cloud-only job_ids query param from GET /api/assets (#14016)

The job_ids query parameter on GET /api/assets is tagged x-runtime:
[cloud] and only exists for cloud's variant of this endpoint. Cloud
removed all consumers and the cloud-side handler/codegen/tests in
Comfy-Org/cloud#3778. With cloud no longer accepting this parameter,
the [cloud-only] documentation here is wrong — drop it so the daily
sync to cloud/services/ingest/vendor/openapi.yaml propagates the
removal.

openapi.yaml

@@ -1556,12 +1556,6 @@ paths:
             type: string
             enum: [asc, desc]
           description: Sort direction
-        - name: job_ids
-          in: query
-          schema:
-            type: string
-          x-runtime: [cloud]
-          description: "[cloud-only] Comma-separated UUIDs to filter assets by associated job."
         - name: include_public
           in: query
           schema: