Remove string-prototype-matchall

[donmccurdy]

Removes string-prototype-matchall. Support for String.prototype.matchAll landed in Node.js v12, and Node.js v16 reached EOL in September 2023, so I agree with the poster of #58 that the need for this shim is now gone. While reviewing my own package dependencies, this was a big source. Thank you!

• Fixes Remove bloated and no longer required string.prototype.matchall dependency #58
• Reverts Use a module implementation of matchAll() #50

[ulrichstark]

@surma Could you please merge this and publish a new version? This unnecessary dependency would significantly unbloat the dependency tree. Thanks in advance for your time!