I don't know if that works for me, because like I said I wasn't able to do the full installstion .
I use "python electrum"....
Yep, sounds like you aren't using an installed copy and you are just running it from the directory it was downloaded to.
You should be able to just remove the directory that it is stored in and it will remove it. Your wallets and configurations are stored in ~/.electrum/ so you would also have to remove that directory should you wish to remove everything. It is usually safer to leave wallet files in case you ever need them in the future though.