ansible: jenkins: debian: remove qemu package

This is a dummy package that isn't available anymore in debian 12.

https://packages.debian.org/buster/qemu says:
> This package can safely be removed.

We install qemu-user-static and qemu-system-arm, which contain qemu
binaries.

Related: OS#6186
Change-Id: I4d5bd376b1e370d9636b9a2e9e710f5f20b9ae98
1 file changed