dpkg-divert: mismatch on divert-to
  when removing `diversion of /usr/lib/libGL.so.1.2 to /usr/share/fglrx/diversio ns/libGL.so.1.2 by xorg-driver-fglrx'
  found `diversion of /usr/lib/libGL.so.1.2 to /usr/lib/fglrx/libGL.so.1.2.xlibm esa by xorg-driver-fglrx'
dpkg: error processing xorg-driver-fglrx (--remove):
 subprocess post-removal script returned error exit status 2
Errors were encountered while processing:
 xorg-driver-fglrx
E: Sub-process /usr/bin/dpkg returned an error code (1)