Depending on how you’ve installed WP-CLI, you may need to delete a file or an entire directory.
You can find where WP-CLI is located on your server using the which command:
$ which wp
/usr/local/bin/wp
Note, this may be a symlink, which you’d need to follow in order to find the true location of WP-CLI:
$ ls -al /usr/local/bin/wp
/usr/local/bin/wp -> /Users/danielbachhuber/salty-wordpress/wp-cli/bin/wp
Once you’ve found the location of WP-CLI, you can delete it, and the symlink if needed, with the rm command.
If you’ve installed WP-CLI as a single Phar file, you can run:
$ rm /usr/local/bin/wp
If you’ve installed WP-CLI using Git or Composer, you’ll need to delete the entire directory:
$ rm -rf /Users/danielbachhuber/salty-wordpress/wp-cli