This removes the final pieces of the obsolete shopify-buy package

package.json

@@ -45,7 +45,6 @@
     "react-dom": "^17.0.1",
     "react-merge-refs": "^1.1.0",
     "react-ticker": "^1.2.2",
-    "shopify-buy": "^2.11.0",
     "swr": "^0.4.0",
     "tabbable": "^5.1.5",
     "tailwindcss": "^2.0.2"
@@ -66,7 +65,6 @@
     "@types/lodash.throttle": "^4.1.6",
     "@types/node": "^14.14.16",
     "@types/react": "^17.0.0",
-    "@types/shopify-buy": "^2.10.5",
     "deepmerge": "^4.2.2",
     "graphql": "^15.4.0",
     "husky": "^4.3.8",