fix: eslint issues

Author: arpban

src/components/nav/MenuColumn.tsx

@@ -1,7 +1,7 @@
 import React from 'react'
 import styled from 'styled-components'
 import Link from 'components/Link'
-import { Box, Text, theme } from '@containous/faency'
+import { Box, Text } from '@containous/faency'
 import { ReactComponent as ArrowRight } from '../../images/arrow-right.svg'
 
 const Links = styled.ul`

src/components/nav/NavHeader.tsx

@@ -17,6 +17,7 @@ const NavHeader = (props: Props) => {
           width: '100%',
           height: '100%',
         }}
+        alt=""
       />
     </Wrapper>
   )