w3c-markup-validator is marked for autoremoval from testing

[Debian testing autoremoval watch]

w3c-markup-validator 1.3+dfsg-3 is marked for autoremoval from testing on 
2017-12-03

It is affected by these RC bugs:
880788: w3c-markup-validator: w3c-markup-validator build depends on removed 
transitional package lynx-cur