How to delete wallet without deleting blockchain I am registering some addresses as watch only addresses and I would like the ability to reset my wallet without having to sync again. Can I just delete my wallet.dat?
I use Bitcoin Core version 16.1.
This wallet does not handle any private keys with a non-zero balance.
Warning: Deleting wallet.dat will make you lose your Bitcoins if your wallet has a non-zero balance!
As Raghav already commented: 

Yes, you can delete the wallet.dat file as long as you don't have any private keys in it. Once you restart Bitcoin Core it creates a new and wallet.dat.