Cleaning KDE "Open with" list

I had installed MPlayer and uninstalled it long back. However, since then KDE always showed it in the "Open With" list for media files. Just to make sure it was not installed on my system I ran

pacman -Rcus mplayer

as root. Obviously the target was not found. After some chatting on #gentoo, I resolved the issue by deleting mplayer.desktop file from ~/.local/share/applications. Along with that, I cleaned some other stale applications from that directory.