Uninstalling bitcoin client in any linux based system is similar to uninstalling a program in linux which you have built from source. Generally users of linux use
make install and they were the ones which was mentioned in the bitcoin build notes as you have been trying to build bitcoin from source.
Wait, I've compiled it again and it shows up at (Bitcoin source code)/src/qt. I've did make install and now I have Bitcoin full node complete with GUI on my PC!
But instead of
make install you could try using
checkinstall. checkinstall command will make the installation and un-installation easier by creating deb packages. See wiki for checkinstall command :
CheckInstallUninstalling older bitcoin client in Linux can be done using the following command :
sudo make uninstall or make uninstall