diff --git a/craco.config.js b/craco.config.js
deleted file mode 100644
index dfec99f7c..000000000
--- a/craco.config.js
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * (c) 2021, Micro:bit Educational Foundation and contributors
- *
- * SPDX-License-Identifier: MIT
- */
-const path = require("path");
-const fs = require("fs");
-
-// Support optionally pulling in external branding if the module is installed.
-const theme = "@microbit-foundation/python-editor-v3-microbit";
-const external = `node_modules/${theme}`;
-const internal = "src/deployment/default";
-
-module.exports = {
-  webpack: {
-    alias: {
-      "theme-package": fs.existsSync(external)
-        ? theme
-        : path.resolve(__dirname, internal),
-    },
-    configure: {
-      ignoreWarnings: [
-        // Temporary version of https://github.com/facebook/create-react-app/pull/11752
-        function ignoreSourcemapsloaderWarnings(warning) {
-          return (
-            warning.module &&
-            warning.module.resource.includes("node_modules") &&
-            warning.details &&
-            warning.details.includes("source-map-loader")
-          );
-        },
-      ],
-    },
-  },
-  jest: {
-    configure: {
-      moduleNameMapper: {
-        "^theme-package(.*)$": `<rootDir>/${
-          fs.existsSync(external) ? external : internal
-        }$1`,
-        "\\.worker": "<rootDir>/src/mocks/worker.js",
-      },
-    },
-  },
-};