CentOS comes with some editors if you do not like any one and want to uninstall it then this tutorial helps you. You can use your desired editor.
First login on centOS as a root user.
Now check that vim is installed or not by running the given command in Linux command line interface.
# vim –version
If you see this picture, then its mean that vim is installed else no need to uninstall it
Uninstall vim.
# yum remove -y vim
After that check the vim --version again.
vim –version
Now vim is uninstalled correctly.