Is anyone still using the 1.11-1.13 Burndown/Bugs/Sprint Kanban boards?

[Chesnay Schepler]

Is anyone still using one of these boards? I would like to remove them 
unless they are still of value to someone.

https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=356&projectKey=FLINK
https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=366&projectKey=FLINK
https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=364&projectKey=FLINK
https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=406&projectKey=FLINK
https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=445&projectKey=FLINK