remove babel stuff that was added in #15657

jest-transformer.js

@@ -1,5 +1,2 @@
 const babelPreset = require(`babel-preset-gatsby-package`)()
-module.exports = require(`babel-jest`).createTransformer({
-  ...babelPreset,
-  plugins: [...babelPreset.plugins, `babel-plugin-dynamic-import-node`],
-})
+module.exports = require(`babel-jest`).createTransformer(babelPreset)

jest.config.js

@@ -33,9 +33,6 @@ module.exports = {
     `/node_modules/`,
     `__tests__/fixtures`,
   ],
-  // gatsby-image includes a dynamic import in the IE polyfill
-  // that Node doesn't understand and needs `babel-plugin-dynamic-import-node`
-  // transformIgnorePatterns: [`/node_modules/`],
   transform: { "^.+\\.js$": `<rootDir>/jest-transformer.js` },
   moduleNameMapper: {
     "^highlight.js$": `<rootDir>/node_modules/highlight.js/lib/index.js`,

package.json

@@ -5,7 +5,6 @@
     "@babel/runtime": "^7.0.0",
     "babel-eslint": "^10.0.1",
     "babel-jest": "^24.0.0",
-    "babel-plugin-dynamic-import-node": "^2.3.0",
     "chokidar": "^1.7.0",
     "cross-env": "^5.1.4",
     "eslint": "^5.16.0",

packages/babel-preset-gatsby-package/index.js

@@ -42,8 +42,7 @@ function preset(context, options = {}) {
     plugins: [
       r(`@babel/plugin-proposal-class-properties`),
       r(`@babel/plugin-proposal-optional-chaining`),
-      r(`@babel/plugin-transform-runtime`),
-      r(`@babel/plugin-syntax-dynamic-import`)
+      r(`@babel/plugin-transform-runtime`)
     ],
   }
 }

packages/babel-preset-gatsby-package/package.json

@@ -12,8 +12,5 @@
     "@babel/preset-react": "^7.0.0"
   },
   "license": "MIT",
-  "main": "index.js",
-  "devDependencies": {
-    "babel-plugin-dynamic-import-node": "^2.3.0"
-  }
+  "main": "index.js"
 }