Hi badrijoseph welcome.
If I'm understanding correctly, have a look under 'manage nodes' in NPM
Then expand out the VM with the datastore issue where it appears and remove from there.
If this isn't the case then please advise where it's still being seen.
I have tried all th epossible ways ,
1. removed from Manage dnodes
2.checked under Resources , data store is not enbaled under resources
3. Still It is showing under Asset Inventory.(We need to remove it from there)
4, I tried POLL NOW and REDISCOVER also but still I see the data store under Asset Inventory.