Ubuntu: remove unnecessary searches in Unity

Execute this command to remove all the search packets.
sudo apt-get autoremove unity-lens-shopping && sudo apt-get autoremove unity-lens-music && sudo apt-get autoremove unity-lens-photos && sudo apt-get autoremove unity-lens-gwibber && sudo apt-get autoremove unity-lens-video

Version context

This procedure describes the software and the environment available at the time of its publication. The packages, interfaces, and repositories mentioned may have changed or disappeared; first check the system version and its support level.

cat /etc/os-release
uname -r

Work on a backup or a snapshot, note every modified file, and prepare for rollback. For a current workstation or server, prefer signed packages from officially supported repositories.

Reference: official Ubuntu lifecycle.