Clean up a Lambda function's logs when you delete it

function-and-log-group.yaml

AWSTemplateFormatVersion: '2010-09-09'

Transform: 'AWS::Serverless-2016-10-31'

Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Properties:
      InlineCode: |
        exports.handler = async () => {
          console.log('im in ur logs, killing ur d00ds')
          return
        }
      Handler: index.handler
      Runtime: nodejs8.10

  LogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub /aws/lambda/${MyFunction}