docs: remove unmaintained and redundant entries

Dead/unmaintained:
- html5lib (no release since 2019)
- fsociety (no commits since 2022)
- optimus (no development since 2023)
- flanker (abandoned by Mailgun)
- imbox (last release Nov 2022)
- green (dormant, pytest dominates)

Redundant/superseded:
- eyed3 (subset of mutagen, GPL)
- odmantic (redundant with beanie)
- audioflux (not established, librosa dominates)
- treq (niche Twisted HTTP client, 606 stars)
- cliff (OpenStack-internal, 260 stars)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: vinta

README.md

@@ -329,7 +329,6 @@ _Libraries for working with HTTP._
 - [furl](https://github.com/gruns/furl) - A small Python library that makes parsing and manipulating URLs easy.
 - [httpx](https://github.com/encode/httpx) - A next generation HTTP client for Python.
 - [requests](https://github.com/psf/requests) - HTTP Requests for Humans.
-- [treq](https://github.com/twisted/treq) - Python requests like API built on top of Twisted's HTTP client.
 - [urllib3](https://github.com/urllib3/urllib3) - A HTTP library with thread-safe connection pooling, file post support, sanity friendly.
 
 ## Web Scraping
@@ -352,8 +351,6 @@ _Libraries to automate web scraping and extract web content._
 
 _Libraries for sending and parsing email._
 
-- [flanker](https://github.com/mailgun/flanker) - An email address and Mime parsing library.
-- [imbox](https://github.com/martinrusev/imbox) - Python IMAP for Humans.
 - [modoboa](https://github.com/modoboa/modoboa) - A mail hosting and management platform including a modern Web UI.
 - [yagmail](https://github.com/kootenpv/yagmail) - Yet another Gmail/SMTP client.
 
@@ -375,7 +372,6 @@ _Libraries that implement Object-Relational Mapping or data mapping techniques._
 - NoSQL Databases
   - [beanie](https://github.com/BeanieODM/beanie) - An asynchronous Python object-document mapper (ODM) for MongoDB.
   - [mongoengine](https://github.com/MongoEngine/mongoengine) - A Python Object-Document-Mapper for working with MongoDB.
-  - [odmantic](https://github.com/art049/odmantic) - Sync and Async ODM for MongoDB built on top of Pydantic for model definition and validation.
   - [pynamodb](https://github.com/pynamodb/PynamoDB) - A Pythonic interface for [Amazon DynamoDB](https://aws.amazon.com/dynamodb/).
 
 ## Database Drivers
@@ -448,7 +444,6 @@ _Libraries for data analysis._
   - [desbordante](https://github.com/desbordante/desbordante-core/) - An open source data profiler for complex pattern discovery.
   - [ibis](https://github.com/ibis-project/ibis) - A portable Python dataframe library with a single API for 20+ backends.
   - [modin](https://github.com/modin-project/modin) - A drop-in pandas replacement that scales workflows by changing a single line of code.
-  - [optimus](https://github.com/hi-primus/optimus) - Agile Data Science Workflows made easy with PySpark.
   - [pandas](https://github.com/pandas-dev/pandas) - A library providing high-performance, easy-to-use data structures and data analysis tools.
   - [pathway](https://github.com/pathwaycom/pathway) - Real-time data processing framework for Python with reactive dataflows.
   - [polars](https://github.com/pola-rs/polars) - A fast DataFrame library implemented in Rust with a Python API.
@@ -602,7 +597,6 @@ _Libraries for testing codebases and generating test data._
   - [scanapi](https://github.com/scanapi/scanapi) - Automated Testing and Documentation for your REST API.
   - [unittest](https://docs.python.org/3/library/unittest.html) - (Python standard library) Unit testing framework.
 - Test Runners
-  - [green](https://github.com/CleanCut/green) - A clean, colorful test runner.
   - [nox](https://github.com/wntrblm/nox) - Flexible test automation for Python.
   - [tox](https://github.com/tox-dev/tox) - Auto builds and tests distributions in multiple Python versions
 - GUI / Web Testing
@@ -771,7 +765,6 @@ _Libraries for building command-line applications._
   - [argparse](https://docs.python.org/3/library/argparse.html) - (Python standard library) Command-line option and argument parsing.
   - [cement](https://github.com/datafolklabs/cement) - CLI Application Framework for Python.
   - [click](https://github.com/pallets/click/) - A package for creating beautiful command line interfaces in a composable way.
-  - [cliff](https://github.com/openstack/cliff) - A framework for creating command-line programs with multi-level commands.
   - [python-fire](https://github.com/google/python-fire) - A library for creating command line interfaces from absolutely any Python object.
   - [python-prompt-toolkit](https://github.com/prompt-toolkit/python-prompt-toolkit) - A library for building powerful interactive command lines.
   - [typer](https://github.com/fastapi/typer) - Modern CLI framework that uses Python type hints. Built on Click and Pydantic.
@@ -863,7 +856,6 @@ _Libraries for working with HTML and XML._
 
 - [beautifulsoup](https://www.crummy.com/software/BeautifulSoup/bs4/doc/) - Providing Pythonic idioms for iterating, searching, and modifying HTML or XML.
 - [cssutils](https://github.com/jaraco/cssutils) - A CSS library for Python.
-- [html5lib](https://github.com/html5lib/html5lib-python) - A standards-compliant library for parsing and serializing HTML documents and fragments.
 - [justhtml](https://github.com/EmilStenstrom/justhtml/) - A pure Python HTML5 parser that just works.
 - [lxml](https://github.com/lxml/lxml) - A very fast, easy-to-use and versatile library for handling HTML and XML.
 - [markupsafe](https://github.com/pallets/markupsafe) - Implements a XML/HTML/XHTML Markup safe string for Python.
@@ -934,7 +926,6 @@ _Libraries for manipulating images._
 _Libraries for manipulating audio, video, and their metadata._
 
 - Audio
-  - [audioflux](https://github.com/libAudioFlux/audioFlux) - A library for audio and music analysis, feature extraction.
   - [gtts](https://github.com/pndurette/gTTS) - Python library and CLI tool for converting text to speech using Google Translate TTS.
   - [librosa](https://github.com/librosa/librosa) - Python library for audio and music analysis.
   - [matchering](https://github.com/sergree/matchering) - A library for automated reference audio mastering.
@@ -944,7 +935,6 @@ _Libraries for manipulating audio, video, and their metadata._
   - [vidgear](https://github.com/abhiTronix/vidgear) - Most Powerful multi-threaded Video Processing framework.
 - Metadata
   - [beets](https://github.com/beetbox/beets) - A music library manager and [MusicBrainz](https://musicbrainz.org/) tagger.
-  - [eyed3](https://github.com/nicfit/eyeD3) - A tool for working with audio files, specifically MP3 files containing ID3 metadata.
   - [mutagen](https://github.com/quodlibet/mutagen) - A Python module to handle audio metadata.
   - [tinytag](https://github.com/devsnd/tinytag) - A library for reading music meta data of MP3, OGG, FLAC and Wave files.
 
@@ -1074,7 +1064,6 @@ _Libraries for storing and parsing configuration options._
 
 _Frameworks and tools for penetration testing._
 
-- [fsociety](https://github.com/Manisso/fsociety) - A Penetration testing framework.
 - [mitmproxy](https://github.com/mitmproxy/mitmproxy) - An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers.
 - [setoolkit](https://github.com/trustedsec/social-engineer-toolkit) - A toolkit for social engineering.
 - [sherlock](https://github.com/sherlock-project/sherlock) - Hunt down social media accounts by username across social networks.