Remove dead 'Write a NoSQL Database in Python' entry (#850)

jeffknupp.com has been hijacked and now redirects to an unrelated
site. Fixes #721; applied manually from PR #850, whose branch had
converted the whole file to CRLF.

Co-authored-by: fengfeng-zi <fengfeng-zi@users.noreply.github.com>
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: 3 people

README.md

@@ -509,7 +509,6 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
 
 - [Build a Simple Interpreter](https://ruslanspivak.com/lsbasi-part1/)
 - [Build a Simple Blockchain in Python](https://hackernoon.com/learn-blockchains-by-building-one-117428612f46)
-- [Write a NoSQL Database in Python](https://jeffknupp.com/blog/2014/09/01/what-is-a-nosql-database-learn-by-writing-one-in-python/)
 - [Building a Gas Pump Scanner with OpenCV/Python/iOS](https://hackernoon.com/building-a-gas-pump-scanner-with-opencv-python-ios-116fe6c9ae8b)
 - [Build a Distributed Streaming System with Python and Kafka](https://codequs.com/p/S14jQ5UyG/build-a-distributed-streaming-system-with-apache-kafka-and-python)
 - [Writing a basic x86-64 JIT compiler from scratch in stock Python](https://csl.name/post/python-jit/)