In Linux/*nix and OSX:
- Find the .android folder in your
$HOMEdirectory. - In .android there should be a avd folder
- In the avd folder should be one or multiple .ini file and a corresponding *.avd virtual device folder.
- Delete both the .ini file and the .avd folder you want to get rid of.
- Return to the Android sdk and AVD manager.
I hope this helps…