remove unsupported cra jest config

Author: dchen278

jest.config.js

@@ -2,4 +2,8 @@ module.exports = {
   rootDir: "src/tests",
   testRegex: "/src/tests/.*test\\.tsx$",
   setupFiles: ["<rootDir>/App.spec.js"],
+  moduleNameMapper: {
+    "^.+\\.(css|scss)$": "<rootDir>/__mocks__/CSSStub.config.js",
+    "react-dotenv": "<rootDir>/__mocks__/react-dotenv.tsx",
+  },
 };

package.json

@@ -72,11 +72,6 @@
     "eject": "react-scripts eject",
     "lint": "eslint . --fix"
   },
-  "jest": {
-    "testPathIgnorePatterns": [
-      "<rootDir>/ignore/this/path/"
-    ]
-  },
   "eslintConfig": {
     "extends": "react-app"
   },