Remove outdated tools

README.md

@@ -131,10 +131,8 @@ You can chat with this page's content on [HuggingChat](https://hf.co/chat/assist
 - [Online DuckDB Shell](https://shell.duckdb.org/) - Online DuckDB shell powered by DuckDB-Wasm.
 - [SQL Workbench](https://sql-workbench.com) - DuckDB-Wasm based SQL Workbench for running queries on local or remote data, being able to show data as tables or visually as graphs, and sharing queries via URLs.
 - [Sekuel Playground](https://sekuel.com/playground/) - Query your local Parquet, CSV, JSON. Your data will not be sent out of the device you are using.
-- [CSVFiddle](https://csvfiddle.io/) - Free tool to explore and share insights from CSV files using SQL. Import data, write SQL, then instantly share it with anyone.
 - [Codapi](https://codapi.org/duckdb/) - Embed executable code snippets directly into your product documentation, online course or blog post.
 - [QuackDB](https://quackdb.com/) - Open-source online DuckDB SQL playground and editor.
-- [WhatTheDuck](https://whattheduck.incentius.com/) - WhatTheDuck is an open-source web application built on DuckDB. It allows users to upload CSV files, store them in tables, and perform SQL queries on the data.
 - [Sidequery](https://sidequery.ai) - Sidequery is a privacy-preserving DuckDB-powered query editor & data exploration tool for local & remote data.
 
 ### Backends