Hide filter tokens on organization admin users search bar

What does this MR do and why?

Hide the filters on the organization admin user search bar as these may not fit the context.

See #630962 for the rationale

References

Related to #630962

Screenshots or screen recordings

How to set up and validate locally

1. Enable ui_for_organizations and org_experimental feature flags
2. Go to /o/<organization>/admin/users

MR acceptance checklist

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