fix(docs): remove unused imports

Author: nlopin

docs/index.storybook.mdx

@@ -14,9 +14,6 @@ import FigmaLogo from './assets/figma-logo-with-text.svg';
 import GithubLogo from './assets/github-logo.svg';
 import WarningIcon from './assets/warning-icon.svg';
 
-import { Colors as ClassicGlobalColors } from '../src/essentials/Colors/Colors';
-import { generateGlobalTierCssVariables } from '../src/utils/generateCssVariables';
-
 import { ArrowRightIcon, AlertIcon, PenIcon } from '../src/icons/';
 import { Box } from '../src/components/Box/Box';
 import { Button } from '../src/components/Button/Button';