Remove old design - 'Show QR Code' dropdown menu item from account selection dropdown

ui/app/components/dropdowns/components/account-dropdowns.js

@@ -221,22 +221,6 @@ class AccountDropdowns extends Component {
           },
           'View account on Etherscan',
         ),
-        h(
-          DropdownMenuItem,
-          {
-            closeMenu: () => {},
-            onClick: () => {
-              const { selected, identities } = this.props
-              var identity = identities[selected]
-              actions.showQrView(selected, identity ? identity.name : '')
-            },
-            style: Object.assign(
-              {},
-              menuItemStyles,
-            ),
-          },
-          'Show QR Code',
-        ),
         h(
           DropdownMenuItem,
           {