[BUG]: [csi-vxflexos]: Update `controller.yaml` template

[Waji-97]

Removed unknown field under "spec.template.spec.affinity.nodeSelector"

Is this a new chart?

No

What this PR does / why we need it:

As explained in issue #427

Which issue(s) is this PR associated with:

• #427

Special notes for your reviewer:

Checklist:

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [ ] Chart Version bumped
• [x] Title of the PR starts with the chart name (e.g. [charts_dir/mychartname]) if applicable