chore: remove RetireJS (#1913)

package.json

@@ -61,13 +61,12 @@
 		"imports-gen": "node ./build/imports-generator",
 		"build": "grunt",
 		"eslint": "eslint --color --format stylish '{lib,test,build,doc}/**/*.js' 'Gruntfile.js'",
-		"test": "npm run retire && tsc && grunt test",
+		"test": "tsc && grunt test",
 		"test:examples": "node ./doc/examples/test-examples",
 		"test:locales": "mocha test/test-locales.js",
 		"test:rule-help-version": "mocha test/test-rule-help-version.js",
 		"version": "echo \"use 'npm run release' to bump axe-core version\" && exit 1",
 		"prepublishOnly": "grunt build && grunt file-exists",
-		"retire": "retire --jspath lib --nodepath ./ --ignorefile .retireignore.json --severity medium",
 		"release": "standard-version -a",
 		"rule-gen": "node build/rule-generator",
 		"next-release": "standard-version --scripts.prebump=./build/next-version.js --skip.commit=true --skip.tag=true",
@@ -120,7 +119,6 @@
 		"mkdirp": "^0.5.1",
 		"mocha": "^6.1.2",
 		"prettier": "^1.17.1",
-		"retire": "^2.0.1",
 		"revalidator": "~0.3.1",
 		"selenium-webdriver": "~3.6.0",
 		"sinon": "^7.5.0",