do you have to uninstall anaconda before installing a newer version code example

Example 1: delete conda from machine

conda install anaconda-clean   # install the package anaconda clean
anaconda-clean --yes           # clean all anaconda related files and directories 
rm -rf ~/anaconda3             # removes the entire anaconda directory

rm -rf ~/.anaconda_backup       # anaconda clean creates a back_up of files/dirs, remove it 
                                # (conda list; cmd shouldn't respond after the clean up)

Example 2: uninstall anaconda ubuntu

#Install anaconda-clean
conda install anaconda-clean

#start anaconda-clean
anaconda-clean --yes