How to get rid of black sidebar on left?

Nevermind, I figured it out. I just had my user’s access level set too low.

You could hide it with CSS like I did pre-v1.1. IF you’re using v1.1 or later, the following should work for you:

/**
 * Hide the Admin menu with CSS.
 */
function prefix_hide_admin_menu() {
	$settings = get_option( 'rda_access_cap' );

	if ( ! current_user_can( $settings ? $settings : 'manage_options' ) : ?>
		<style type="text/css">
		#adminmenuback, #adminmenuwrap {
			display: none;
		}
		.wrap {
			margin-top: 1.5%;
		}
		#wpcontent {
			margin-left: 2%;
		}
	<?php endif; ?>
}
add_action( 'admin_head', 'prefix_hide_admin_menu' );