fix doc: delete import { Link } from "gatsby" (gatsbyjs#21113)

naoya7076 · web-flow · commit 3387b2b863da · 2020-02-01T16:58:16.000+02:00
diff --git a/docs/tutorial/ecommerce-tutorial/index.md b/docs/tutorial/ecommerce-tutorial/index.md
@@ -389,7 +389,6 @@ Once you're happy with your query, create a new page where you can import the ne
 
 ```jsx:title=src/pages/advanced.js
 import React from "react"
-import { Link } from "gatsby"
 
 import Layout from "../components/layout"
 import SEO from "../components/seo"
