chore: remove jest -> cypress for unit tests

components/design/IconButton/IconButton.test.tsx

@@ -1,15 +0,0 @@
-import { render } from '@testing-library/react'
-import { CogIcon } from '@heroicons/react/solid'
-
-import { IconButton } from './IconButton'
-
-describe('<IconButton />', () => {
-  it('should render successfully', () => {
-    const { baseElement } = render(
-      <IconButton className='h-10 w-10'>
-        <CogIcon />
-      </IconButton>
-    )
-    expect(baseElement).toBeTruthy()
-  })
-})