How to completely remove node

I need to reinstall node. Trying to delete all data containing wave. And install again. These what i get when trying to do that.
user@wavesServer:~$ sudo dpkg -i waves*.deb
(Reading database … 103894 files and directories currently installed.)
Preparing to unpack waves_0.15.5_all.deb …
Unpacking waves (0.15.5) over (0.15.5) …
Setting up waves (0.15.5) …
Installing systemd service …
Failed to enable unit: Unit file waves.service does not exist.
dpkg: error processing package waves (–install):
installed waves package post-installation script subprocess returned error exit status 1
Processing triggers for ureadahead (0.100.0-20) …
Errors were encountered while processing:
waves