Simplified ESLint config

package.json

@@ -52,7 +52,6 @@
   },
   "devDependencies": {
     "@babel/core": "^7.6.4",
-    "@babel/eslint-parser": "^7.13.14",
     "@babel/preset-env": "^7.4.4",
     "@openlayers/eslint-plugin": "^4.0.0",
     "@rollup/plugin-babel": "^5.3.0",
@@ -69,8 +68,8 @@
     "coverage-istanbul-loader": "^3.0.5",
     "coveralls": "3.1.1",
     "es-main": "^1.0.2",
-    "eslint": "^7.2.0",
-    "eslint-config-openlayers": "^15.0.0",
+    "eslint": "^7.32.0",
+    "eslint-config-openlayers": "^16.0.1",
     "expect.js": "0.3.1",
     "express": "^4.17.1",
     "front-matter": "^4.0.0",
@@ -117,10 +116,6 @@
   },
   "eslintConfig": {
     "extends": "openlayers",
-    "parser": "@babel/eslint-parser",
-    "parserOptions": {
-      "requireConfigFile": false
-    },
     "plugins": [
       "@openlayers"
     ],