Removing Like button and Pagination

You can add this to the Blog Settings > Page Header Code Injection in your blog page settings. It removes some other things, too, as you can see from each line, so just delete the lines you don't need between the style tags.

<style>
  .sqs-share-buttons {display: none;}
  .squarespace-comments {display: none;}
  .BlogItem-pagination-link-content {display: none;}
  .BlogList-pagination-link-label {color: #ffffff;}
  .BlogItem-pagination-link--prev, .BlogItem-pagination-link--next {display: none;}
</style>