Remove Storybook from configs

[MAILPOET-6110]

mailpoet/.gitignore

@@ -26,5 +26,4 @@ tasks/code_sniffer/vendor
 tasks/phpstan/vendor
 tasks/phpstan/_phpstan-wp-source.neon
 /tools/vendor
-/storybook-static
 assets/js/src/newsletter-editor/behaviors/tinymce-icons.js

mailpoet/RoboFile.php

@@ -262,8 +262,6 @@ class RoboFile extends \Robo\Tasks {
       'vendor',
       'vendor-prefixed',
       'RoboFile.php',
-      '.storybook',
-      'storybook-static',
     ]);
 
     $headers = escapeshellarg(

mailpoet/tsconfig.storybook.json

@@ -1,4 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "include": ["./assets/js/src/**/_stories/*.tsx"]
-}