To uninstall libboost-timer-dev just follow these instructions.
sudo apt-get remove libboost-timer-dev
This will remove just the libboost-timer-dev package itself.
sudo apt-get remove --auto-remove libboost-timer-dev
This will remove the libboost-timer-dev package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for libboost-timer-dev then this will work.
sudo apt-get purge libboost-timer-dev
Or similarly, like this libboost-timer-dev
sudo apt-get purge --auto-remove libboost-timer-dev
|Maintainer||Debian Boost Team <email@example.com>|
|Description||C++ wall clock and CPU process timers (default version)|