Fix skinning replaces being broken since being rewritten as React FC's

src/components/views/auth/VectorAuthFooter.js

@@ -48,6 +48,4 @@ module.exports = () => {
         </div>
     );
 };
-module.exports.statics = {
-    replaces: 'AuthFooter',
-};
+module.exports.replaces = 'AuthFooter';

src/components/views/auth/VectorCustomServerDialog.js

@@ -49,6 +49,4 @@ module.exports = ({onFinished}) => {
         </div>
     );
 };
-module.exports.statics = {
-    replaces: 'CustomServerDialog',
-};
+module.exports.replaces = 'CustomServerDialog';