Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
The following packages were automatically installed and are no longer required:
  linux-headers-4.8.0-36 linux-headers-4.8.0-36-generic linux-headers-4.8.0-53
  linux-headers-4.8.0-53-generic linux-headers-4.8.0-54
  linux-headers-4.8.0-54-generic linux-image-4.8.0-36-generic
  linux-image-4.8.0-53-generic linux-image-4.8.0-54-generic
  linux-image-extra-4.8.0-36-generic linux-image-extra-4.8.0-53-generic
  linux-image-extra-4.8.0-54-generic linux-signed-image-4.8.0-53-generic
  linux-signed-image-4.8.0-54-generic snap-confine
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.