Update KOPSonAWS.md

The AWS CLI SG commands are not necessary, kops creates an SG with these ports open to the correct SG by default

docs/KOPSonAWS.md

@@ -5,22 +5,8 @@
 
 A running Kubernetes cluster created with [KOPS](https://github.com/kubernetes/kops).
  
-These instructions have currently been tested with  **topology=public** on AWS with KOPS 1.5.1 and Kubernetes 1.5.x
+These instructions have currently been tested with  **topology=public** on AWS with KOPS 1.7.1 and Kubernetes 1.7.x
 
-## Open AWS Security Groups:
-1. Open port 9100 on the masters security group to the nodes security group
-1. Open ports 10250-10252 on the masters security group to the nodes security group.
-
-Example script below requires $AWS\_DEFAULT_PROFILE and [$NAME](https://github.com/kubernetes/kops/blob/master/docs/aws.md#prepare-local-environment)
-
-```bash
-MASTER_SG=$(aws --profile ${AWS_DEFAULT_PROFILE} ec2 describe-security-groups --filters "Name=tag:Name,Values=masters.$NAME" --query "SecurityGroups[*].GroupId[]" --output=text)
-NODES_SG=$(aws --profile ${AWS_DEFAULT_PROFILE} ec2 describe-security-groups --filters "Name=tag:Name,Values=nodes.$NAME" --query "SecurityGroups[*].GroupId[]" --output=text)
-aws --profile ${AWS_DEFAULT_PROFILE} ec2 authorize-security-group-ingress --group-id $MASTER_SG --protocol tcp --port 9100 --source-group $NODES_SG
-aws --profile ${AWS_DEFAULT_PROFILE} ec2 authorize-security-group-ingress --group-id $MASTER_SG --protocol tcp --port 10250-10252 --source-group $NODES_SG
-```
-
-## Adding kube-prometheus
 Following the instructions in the [README](https://github.com/coreos/prometheus-operator/blob/master/contrib/kube-prometheus/README.md):
 
 Example: