Line Numbers in Code Blocks

[jrock2004]

How can I configure to not show the line numbers for my code blocks?

posts: [
  {
    id: 1,
    title: 'This is my first post',
    body: 'Some description would go here'
  }
]

When I view the page I see this

I opened a ticket with ember-prism, thinking maybe that comes from them, but they say on theirs the default is no line numbers