The simplest way to uninstall animBot is to run Uninstall from the menu.
Alternatively, you can remove the animBot folder from your maya/scripts folder:
(Mac OS X) $HOME/Library/Preferences/Autodesk/maya/scripts/animBot
If you had the option "Launch at Maya Startup" enabled, you will also need to remove the entries below from the file userSetup.py, located in your maya/scripts folder as well:
# start animBot
from maya import cmds
if not cmds.about(batch=True):
cmds.evalDeferred("import animBot; animBot.launch()", lowestPriority=True)
# end animBot
Enterprise Edition users: Do not follow this uninstallation method, please contact me if in doubt on how to remove animBot from your system.