Cleanup perf/README (#84)

I forgot to delete some stuff that was moved to istio-install/README

Author: howardjohn

perf/README.md

@@ -10,31 +10,3 @@ This folder contains tests for performance and stability. There are different ty
     The intent of these tests is to be run continuously for extend periods of time, which differentiates them from integration tests.
 1. [/benchmark](./benchmark) provides a test to measure the latency and metrics of traffic between pods in various setups.
 1. [/load](./load) provides tools to generate large services to test Istio under heavy load.
-
-
-## Setup Istio
-
-For performance testing, it is recommended to setup Istio with performance oriented values, but it is not required.
-
-### Setup With Performance Parameters
-
-Look at values.yaml for details.
-
-To setup Istio, run `DNS_DOMAIN=your-example-domain ./setup_istio.sh release-1.1-20190125-09-16`.
-
-To just output the deployment file, run `DRY_RUN=1 DNS_DOMAIN=your-example-domain ./setup.sh release-1.1-20190125-09-16`.
-
-You may replace the release in the command to the release to test.
-
-You may also override the Helm repo or release URL:
-
-```bash
-export HELMREPO_URL=https://storage.googleapis.com/istio-release/releases/1.1.0-rc.0/charts/index.yaml
-export RELEASE_URL=https://github.com/istio/istio/releases/download/untagged-c41cff3404b8cc79a97e/istio-1.1.0-rc.0-linux.tar.gz
-
-DNS_DOMAIN=your-example-domain ./setup.sh release-1.1-20190203-09-16
-```
-
-### Setup With Custom Installation
-
-The performance tests can also run on an existing Istio installation. This can be useful to test out settings or modifications to Istio.