chore: remove typings build script

package.json

@@ -24,7 +24,6 @@
     "test:example-esm-auto-loader": "node test/esm-lib/supports-auto-load.js not || (cd example-esm && npm i && npm run test-auto-loader)",
     "test:smells": "bash ./test/require-smell-test.sh",
     "test:ci": "npm test && npm run test:esm && npm run test:no-loader-esm && npm run test:esm-auto-loader && npm run style && npm run test:example && npm run test:example-esm && npm run test:example-esm-auto-loader && npm run test:smells",
-    "test:typings": "tsc",
     "preversion": "git pull --rebase && npm run test:ci",
     "postversion": "git push && git push --tags && npm publish"
   },