[Blog] Remove carbon ads

[LoicPoullain]

Issue

Some ads were displayed on the official documentation. They were making between 20$ and 70$ per year which is not a lot in regards with:

• sponsorships
• the inconvenience they cause when reading the documentation
• the work that needs to be done when upgrading to a higher version of Docusaurus

Solution and steps

• [x] Remove the ads