Uninstalling MacTeX
http://www.tug.org/mactex/uninstalling.html
Delete the following folders:
/usr/local/texlive
/Applications/TeX
/Library/TeX/
http://www.tug.org/mactex/uninstalling.html
Delete the following folders:
/usr/local/texlive
/Applications/TeX
/Library/TeX/