Tips on Customizing Simply Static – The WordPress Static Site Generator

How to Hide Simply Static Admin Menus

function plt_hide_simply_static_menus() {
	//Hide "Simply Static".
	remove_menu_page('simply-static-generate');
	//Hide "Simply Static → Generate".
	remove_submenu_page('simply-static-generate', 'simply-static-generate');
	//Hide "Simply Static → Settings".
	remove_submenu_page('simply-static-generate', 'simply-static-settings');
	//Hide "Simply Static → Diagnostics".
	remove_submenu_page('simply-static-generate', 'simply-static-diagnostics');
}

add_action('admin_menu', 'plt_hide_simply_static_menus', 11);

Where do I put this code?

How to Hide the "Simply Static" Meta Box

function plt_hide_simply_static_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Simply Static" meta box.
	remove_meta_box('single-export-teaser', $screen->id, 'side');
}

add_action('add_meta_boxes', 'plt_hide_simply_static_metaboxes', 20);