Remove WordPress default Blog Post Type (because sometimes, there's just no blog, LOL…)

functions.php

<?php
/**
 * Remove default Posts type since NO BLOG LOL
 * 
 * Remove side menu
 */
function mercs_remove_default_post_type() {
    remove_menu_page( 'edit.php' );
}
add_action( 'admin_menu', 'mercs_remove_default_post_type' );

/**
 * Remove default Posts type since NO BLOG LOL
 * 
 * Remove +New post in top Admin Menu Bar
 */
function mercs_remove_default_post_type_menu_bar( $wp_admin_bar ) {
    $wp_admin_bar->remove_node( 'new-post' );
}
add_action( 'admin_bar_menu', 'mercs_remove_default_post_type_menu_bar', 999 );

/**
 * Remove default Posts type since NO BLOG LOL
 * 
 * Remove Quick Draft Dashboard Widget
 */
function mercs_remove_draft_widget(){
    remove_meta_box( 'dashboard_quick_press', 'dashboard', 'side' );
}
add_action( 'wp_dashboard_setup', 'mercs_remove_draft_widget', 999 );