How do I remove frontpage content block?
You cannot remove the content part of a page as it is not a block. The content is suppose to be your main content that always shows and blocks are things that can be conditionally shown around your content.

You can create a page display for your view, then change the front page of your Drupal site to point to your views page display (D7: admin/config/system/site-information, D6: admin/settings/site-information).