remove "wercker" tutorials?

[falkmielke]

I stumbled upon two tutorials that refer to "wercker" ci/cd.

• https://tutorials.inbo.be/tutorials/development_codecov
• https://tutorials.inbo.be/tutorials/development_wercker

I did not know what "wercker" is, but it seems to have been and ancient way of automating docker setups.
Wercker was acquired by oracle; the website now forwards to OCI.
Wikipedia labels the software as "defunct", as of 2017.

Do we still affiliate with OCI? Then, these tutorials require an update.
Otherwise, should we best archive these tutorials? (they are of no use for anyone, I guess).