remove unnecessary dep

Author: ocadaruma

packages/duckdb-wasm/package.json

@@ -31,7 +31,6 @@
         "@typescript-eslint/eslint-plugin": "^6.3.0",
         "@typescript-eslint/parser": "^6.4.1",
         "esbuild": "^0.18.13",
-        "esbuild-ifdef": "^0.2.0",
         "esbuild-plugin-ifdef": "^1.0.1",
         "eslint": "^8.47.0",
         "eslint-plugin-jasmine": "^4.1.3",