chore(csv-generate): remove unused each (#473)

Author: noritaka1166

package-lock.json

@@ -17,7 +17,6 @@
     "@types/mocha": "^10.0.10",
     "@types/node": "^22.15.30",
     "dedent": "^1.6.0",
-    "each": "^2.7.2",
     "mocha": "~11.5.0",
     "prettier": "^3.5.3",
     "rollup": "^4.41.1",