Get rid of now-mostly-wrong readme

incubator/hnc/hack/prow-e2e/README.md

@@ -1,18 +1,2 @@
 This directory contains the files required to run HNC e2e tests on Prow using
 Kind.
-
-Files:
-* Makefile: contains `build`, `run` and `clean` targets. `run` includes `build`.
-  * Also 'push', which requires that you have permission to push to
-    gcr.io/k8s-staging-multitenancy.
-* Dockerfile: creates the image that contains Kind and everything else required
-  to run the tests.
-* run-e2e-tests.sh: included in the Docker image; pulls the repo, creates a Kind
-  cluster, deploys HNC and runs the tests.
-
-The Dockerfile depends on a specific version of the KRTE base image and KIND
-(see comments in that file for details). You should update those every six
-months or so, but probably nothing too bad will happen if you don't.
-
-To run the tests in the container (i.e., debug the container), type `make run`,
-followed by `make clean` if it doesn't finish successfully.