[bugfix] Tab: title slot render (#1212)

packages/utils/node.js

@@ -1,13 +0,0 @@
-/**
- * VNode helper
- */
-export default {
-  name: 'van-node',
-  functional: true,
-  props: {
-    node: Array
-  },
-  render(h, ctx) {
-    return ctx.props.node;
-  }
-};