drop 1.33 k8s in kind testing (#16385)

Author: dprotaso

.github/workflows/kind-e2e.yaml

@@ -82,7 +82,6 @@ jobs:
       fail-fast: false # Keep running if one leg fails.
       matrix:
         k8s-version:
-        - v1.33.x
         - v1.34.x
         - v1.35.x