How to hide City field

I want to hide city field from both billing and shipping address. I am using following code but it doesn’t hide shipping although it does hide Postcode and Address2. Why this code is not working for City field?

add_filter( ‘woocommerce_default_address_fields’ , ‘custom_override_default_address_fields’ );

function custom_override_default_address_fields( $address_fields ) {
unset($address_fields[‘postcode’]);
unset($address_fields[‘address_2’]);
unset($address_fields[‘city’]);
$address_fields[‘address_1’][‘label’] = ‘Address’;
$address_fields[‘state’][‘label’] = ‘City’;

return $address_fields;
}