[Doc] The Readme badges "Dependency Status" and "devDependency Status" are failing

[fmagaldea]

Describe the bug
Some Readme.md badges are failing: "Dependency Status" and "devDependency Status".

To Reproduce

Just go to https://github.com/socketio/socket.io

Expected behavior
Fix the failing domain (https://david-dm.org/) or just drop these icons if they are obsolete?

Platform:

• Tested with Chrome 97 on Mac OS X

[darrachequesne]

Hi! I removed the badges. Thanks for the heads-up!

Related: alanshaw/david#179