delete 'Remove Template Files' section

[ClaytonFarr]

the initial API / hello world infrastructure is expected and built upon in subsequent tutorial steps, starting here - https://serverless-stack.com/chapters/review-our-app-architecture.html

[jayair]

I might've missed this but in this PR (#582) you are renaming MyStack.js. Are you also removing the src/lambda.js somewhere?

If not, then we can move that to the bottom part of the chapter in that PR.

[ClaytonFarr]

Ah, you're right. I was originally going to suggest updating the 'Add the Function' section (https://serverless-stack.com/chapters/add-an-api-to-create-a-note.html#add-the-function) to rename src/lambda.js to the new src/create.js file needed and update the file's contents, but had forgotten.

If you think it makes sense to direct the user to create a new file and delete the boilerplate lambda instead, it may be clearer to have that delete step occur the same chapter where we repurpose and rename MyStack.js.

[jayair]

Yeah I think it makes more sense to not rename the boilerplate stack or lambda function. Just remove it. I'd suggest moving the section from this PR to the other one #582. After we create the new API we can remove the old files?