If you are only concerned about disabling acroread plugins for your browser then (assuming you use firefox)
Firefox --> Edit --> Preferences --> (search for pdf) and change value in front of it through the dropdown.
You can disable both at the browser and also run
sudo rm /usr/lib/mozilla/plugins/*nppdf.so sudo rm /usr/lib/firefox-addons/plugins/*nppdf.so sudo rm /usr/lib/firefox/plugins/*nppdf.so
to definitely delete the plugin at the system level.
Warning: this solution is destructive. Don't run the above commands unless you understand what they mean!