ratelimit: remove deprecated cluster (#5185)
ratelimit: remove deprecated cluster (#5185)

Signed-off-by: Rama Chavali <rama.rao@salesforce.com>

Mirrored from https://github.com/envoyproxy/envoy @ 96b575469dceb640e5f14e7e454f5ed0f91b3d2f

lyft/envoy-api,lyft/envoy-api,lyft/envoy-api