qemu - 1:3.1+dfsg-2pureos1 main

QEMU is a fast processor emulator. Once upon a time there was only one
package named `qemu', with all functionality included. These days, qemu
become large and has been split into numerous packages. Different packages
provides entirely different services, and it is very unlikely one will
need all of them together. So current `qemu' package makes no sense anymore,
and is becoming a dummy package.
.
If you want full system emulation of some architecture, install one or more
of qemu-system-ARCH packages. If you want user-mode emulation, install
qemu-user pr qemu-user-static package. If you need utilities, use qemu-utils
package.
.
This package can safely be removed.