Remove release-0.35 from list of tested CI branches

CI will still run because it's a PR

Co-authored-by: Hong Ge <[email protected]>

Author: penelopeysm

.github/workflows/CI.yml

@@ -5,7 +5,6 @@ on:
     branches:
       - master
       - backport-*
-      - release-0.35
   pull_request:
   merge_group:
     types: [checks_requested]