removes source map for bin.js

package.json

@@ -10,7 +10,7 @@
     "format-check": "prettier --check **/*.ts",
     "lint": "eslint src/**/*.ts",
     "package-main": "ncc build src/main.ts --source-map --license licenses.txt --out dist/main",
-    "package-bin": "ncc build src/bin.ts --source-map --license licenses.txt --out dist/bin && prepend dist/bin/index.js '#!/usr/bin/env node\n\n'",
+    "package-bin": "ncc build src/bin.ts --license licenses.txt --out dist/bin && prepend dist/bin/index.js '#!/usr/bin/env node\n\n'",
     "package": "npm run package-main && npm run package-bin",
     "test": "jest",
     "all": "npm run build && npm run format && npm run lint && npm run package && npm test"