docs: remove incorrect pubsub docs (#145)

Author: grant

docs/README.md

@@ -41,77 +41,3 @@ URL: http://localhost:8080/
 ```
 
 You can now use an IDE or other tooling to add breakpoints, step through your code and debug your function.
-
-## Local testing of cloud events
-The setup for cloud functions that accept events is very similar to the instructions in the quickstart, with the following adjustments:
-
-In your package.json, add a signature type (in bold) to your start command:
-<pre>
-  "scripts": {
-    "start": "functions-framework --target=helloWorld <b>--signature-type=event"</b>
-  }
-</pre>
-
-Upon running ```sh npm start ```, you'll see the function is still being served at http://localhost:8080/. However it is no longer accessible via GET requests from the browser. Instead, send a POST request where the request body conforms to the API defined by [push subscriptions](https://cloud.google.com/pubsub/docs/push).
-
-### Submitting POST request to simulating a pubsub message
-
-Create mockPubsub.json file with the following contents:
-```json
-{
-  "message": {
-    "attributes": {
-      "key": "value"
-    },
-    "data": "SGVsbG8gQ2xvdWQgUHViL1N1YiEgSGVyZSBpcyBteSBtZXNzYWdlIQ==",
-    "messageId": "136969346945"
-  },
-  "subscription": "projects/myproject/subscriptions/mysubscription"
-}
-```
-
-The file can be in any folder on your computer. From the terminal, goto the directory where ```mockPubsub.json``` is located, and run the following command assuming your cloud function is hosted locally on port 8080:
-```sh
-curl -d "@mockPubsub.json" -X POST \
-  -H "Ce-Type: true" \
-  -H "Ce-Specversion: true" \
-  -H "Ce-Source: true" \
-  -H "Ce-Id: true" \
-  -H "Content-Type: application/json" \
-  http://localhost:8080
-```
-
-> In order to simulate a Cloud Event, you need to add the ```Ce-*``` headers, along with a _truthy_ value, to the request.
-
- ### Using pubsub emulator
-
- Another way to test your cloud function pubsub endpoint is to use the [pubsub emulator](https://cloud.google.com/pubsub/docs/emulator). This allows you to use the pubsub notification from another service to trigger your cloud function.
-
- The high level approach is to:
- 1. Start the pubsub emulator
- 2. Use the pubsub client library to create a subscription and set the pushEndpoint to http://localhost:8080.
-
- After that, all notifications to the subscription topic will be pushed to your cloud function.
-
- Sample script for creating subscription with pushEndpoint:
-
- ```js
-{ PubSub } require('@google-cloud/pubsub');
-
-async function main() {
-  const pubsub = new PubSub({
-    apiEndpoint: 'localhost:8085', // Pubsub emulator endpoint
-    projectId: 'myproject',
-  });
-  const topic = await pubsub.topic('my-topic');
-  const [topicExists] = await topic.exists();
-  if (!topicExists) {
-    await topic.create();
-  }
-  const createSubscriptionResponse = await topic.createSubscription('my_subscription', {
-    pushEndpoint: 'https://localhost:8080',
-  });
-}
-
-main();
- ```