Remove route53 readme
diff --git a/certbot-dns-route53/MANIFEST.in b/certbot-dns-route53/MANIFEST.in
index fc62028b018..a53dbd85b22 100644
--- a/certbot-dns-route53/MANIFEST.in
+++ b/certbot-dns-route53/MANIFEST.in
@@ -1,5 +1,4 @@
 include LICENSE.txt
-include README
 recursive-include docs *
 recursive-include tests *
 global-exclude __pycache__
diff --git a/certbot-dns-route53/README.md b/certbot-dns-route53/README.md
deleted file mode 100644
index 4af66aa0068..00000000000
--- a/certbot-dns-route53/README.md
+++ /dev/null
@@ -1,35 +0,0 @@
-## Route53 plugin for Let's Encrypt client
-
-### Before you start
-
-It's expected that the root hosted zone for the domain in question already
-exists in your account.
-
-### Setup
-
-1. Create a virtual environment
-
-2. Update its pip and setuptools (`VENV/bin/pip install -U setuptools pip`)
-to avoid problems with cryptography's dependency on setuptools>=11.3.
-
-3. Make sure you have libssl-dev and libffi (or your regional equivalents)
-installed. You might have to set compiler flags to pick things up (I have to
-use `CPPFLAGS=-I/usr/local/opt/openssl/include
-LDFLAGS=-L/usr/local/opt/openssl/lib` on my macOS to pick up brew's openssl,
-for example).
-
-4. Install this package.
-
-### How to use it
-
-Make sure you have access to AWS's Route53 service, either through IAM roles or
-via `.aws/credentials`. Check out
-[sample-aws-policy.json](examples/sample-aws-policy.json) for the necessary permissions.
-
-To generate a certificate:
-```
-certbot certonly \
-  -n --agree-tos --email DEVOPS@COMPANY.COM \
-  --dns-route53 \
-  -d MY.DOMAIN.NAME
-```

Our route53 plugin was initially a 3rd party plugin and we took on maintenance of it ourselves in https://github.com/certbot/certbot/pull/4692. This README file came along with the plugin, but we have more complete and up-to-date documentation for the plugin at https://certbot-dns-route53.readthedocs.io/en/stable/ so I think we should delete this file in favor of that which also helps keep things consistent with our other DNS plugins.

I also deleted the reference to the file in `MANIFEST.in` which wasn't even working because it was missing the `.md` extension.