root@dave-desktop:~# ppa-purge ppa:danielrichter2007/grub-customizer
Updating packages lists
PPA to be removed: danielrichter2007 grub-customizer
Package revert list generated:
 grub-customizer/trusty

Disabling danielrichter2007 PPA from 
/etc/apt/sources.list.d/danielrichter2007-grub-customizer-trusty.list
Updating packages lists
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Release 'trusty' for 'grub-customizer' was not found
Unable to find an archive "trusty" for the package "grub-customizer"
Unable to find an archive "trusty" for the package "grub-customizer"
The following packages will be REMOVED:
  account-plugin-windows-live{u} 
0 packages upgraded, 0 newly installed, 1 to remove and 3 not upgraded.
Need to get 0 B of archives. After unpacking 52.2 kB will be freed.
Do you want to continue? [Y/n/?] 
(Reading database ... 216646 files and directories currently installed.)
Removing account-plugin-windows-live (0.11+14.04.20140409.1-0ubuntu2) ...
                                         
PPA purged successfully using aptitude fallback

root@dave-desktop:~# dpkg -l grub-customizer
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                             Version               Architecture          Description
+++-================================-=====================-=====================-======================================================================
ii  grub-customizer                  4.0.6-0ubuntu1~ppa1t  amd64                 Grub Customizer - A graphical Grub2/BURG configuration application