chore: remove unused code and files

config/env.js

@@ -2,7 +2,6 @@
 
 const fs = require("fs");
 const path = require("path");
-const paths = require("./paths");
 
 // Make sure that including paths.js after env.js will read .env variables.
 delete require.cache[require.resolve("./paths")];
@@ -12,32 +11,6 @@ if (!NODE_ENV) {
   throw new Error("The NODE_ENV environment variable is required but was not specified.");
 }
 
-// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
-const dotenvFiles = [
-  `${paths.dotenv}.${NODE_ENV}.local`,
-  // Don't include `.env.local` for `test` environment
-  // since normally you expect tests to produce the same
-  // results for everyone
-  NODE_ENV !== "test" && `${paths.dotenv}.local`,
-  `${paths.dotenv}.${NODE_ENV}`,
-  paths.dotenv
-].filter(Boolean);
-
-// Load environment variables from .env* files. Suppress warnings using silent
-// if this file is missing. dotenv will never modify any environment variables
-// that have already been set.  Variable expansion is supported in .env files.
-// https://github.com/motdotla/dotenv
-// https://github.com/motdotla/dotenv-expand
-dotenvFiles.forEach((dotenvFile) => {
-  if (fs.existsSync(dotenvFile)) {
-    require("dotenv-expand")(
-      require("dotenv").config({
-        path: dotenvFile
-      })
-    );
-  }
-});
-
 // We support resolving modules according to `NODE_PATH`.
 // This lets you use absolute paths in imports inside large monorepos:
 // https://github.com/facebook/create-react-app/issues/253.