I ran this command sudo apt-get install tor-browser and I got this output. Should I apply autoremove as mentioned?   
 sudo apt-get install tor-browser
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    The following packages were automatically installed and are no longer required:
      linux-headers-4.4.0-21 linux-headers-4.4.0-21-generic linux-headers-4.4.0-22
      linux-headers-4.4.0-22-generic linux-image-4.4.0-21-generic
      linux-image-4.4.0-22-generic linux-image-extra-4.4.0-21-generic
      linux-image-extra-4.4.0-22-generic linux-signed-image-4.4.0-21-generic
      linux-signed-image-4.4.0-22-generic
    Use 'sudo apt autoremove' to remove them.
    The following NEW packages will be installed:
      tor-browser
    0 upgraded, 1 newly installed, 0 to remove and 44 not upgraded.
    Need to get 69.5 MB of archives.
    After this operation, 69.5 MB of additional disk space will be used.
    Get:1 http://ppa.launchpad.net/webupd8team/tor-browser/ubuntu xenial/main amd64 tor-browser amd64 6.0.2-1~webupd8~0 [69.5 MB]
 
     
    