The data of that shard server has lost, the server is down, how can I remove it directly from my cluster?

I have tried

db.runCommand(
{ removeshard: "shard0002" }
)

, however, it made no sense, the response is always:

{
"msg" : "draining ongoing",
"state" : "ongoing",
"remaining" :
{ "chunks" : NumberLong(612), "dbs" : NumberLong(0) }
,
"note" : "you need to drop or movePrimary these databases",
"dbsToMove" : [ ],
"ok" : 1
}

I just want to remove the damage shard (unreachable), and let the cluster run normally.
However, I couldn't find a way to finish it...
Who can help me?
Thanks in advance!