I use yakuake as drop-down-terminal in Ubuntu 16.04. Whenever I click on a link on the console to open it in browser, it opens in the default kde-browser webbrowser-app.
I tried to uninstall webbrowser-app, but that would uninstall those packages too:
libunity-webapps0 unity-tweak-tool unity-webapps-common unity-webapps-service webapp-container
I am not sure, if I still need them.