remove the portion for egress gateway exposed as nodeport (#3255)
remove the portion for egress gateway exposed as nodeport (#3255)

* remove the portion for egress gateway

* Update index.md

geeknoid/istio.github.io,geeknoid/istio.github.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,geeknoid/istio.github.io,geeknoid/istio.github.io,geeknoid/istio.github.io