Summary
We used the Spotlight in the upper right corner to open the Terminal window.
Next, we removed all miniconda3 files with:
rm -rf ~/opt/miniconda3
We cleaned additional configurations with:
rm -rf ~/.condarc ~/.conda
And we removed the path statement by using the vi terminal editor:
vi ~/.bash_profile
Moving the cursor with the keyboard's down arrow to where conda initialization was and deleted lines by pressing D twice (e.g. DD).
Once done, we closed the vi terminal editor by pressing ESC, colon `:`, and `wq`.