chore: Remove any custom lint rules (#5533)

Author: abhiomkar

package.json

@@ -18,11 +18,10 @@
     "lint:js": "eslint test scripts webpack.config.js karma.conf.js",
     "lint:ts": "tslint --exclude \"**/*.d.ts\" --exclude \"packages/**/test/*.ts\" \"packages/test/*.ts\" \"test/**/*.ts\" \"scripts/**/*.ts\"",
     "lint:html": "find test/screenshot/spec/ -name '*.html' | grep -v 'index.html$' | xargs htmllint",
-    "lint:mdc": "ts-node --project scripts/tsconfig.json -- scripts/lint-mdc.ts",
     "lint": "npm-run-all --parallel lint:*",
     "postinstall": "lerna bootstrap",
     "pretest": "npm run lint",
-    "test": "npm run test:unit && npm run test:feature-targeting && npm run test:dependency && npm run build && npm run clean",
+    "test": "npm run test:unit && npm run test:dependency && npm run build && npm run clean",
     "screenshot:approve": "node test/screenshot/run.js approve",
     "screenshot:build": "node test/screenshot/run.js build",
     "screenshot:clean": "node test/screenshot/run.js clean",
@@ -36,7 +35,6 @@
     "start": "npm-run-all --parallel screenshot:serve screenshot:watch",
     "test:sass": "jasmine --config=jasmine-node.json",
     "test:dependency": "./scripts/dependency-test.sh",
-    "test:feature-targeting": "node test/scss/verify-feature-targeting.js",
     "test:site": "npm run clean:site && ./scripts/site-generator-test.sh",
     "test:unit": "npm run test:jasmineunit; jasmine_exit_code=$?; npm run test:mochaunit && exit \"$jasmine_exit_code\"",
     "test:jasmineunit": "USE_JASMINE=true karma start --single-run",