tests/vm: Remove obsolete Fedora VM test

tests/vm: Remove obsolete Fedora VM test

It's still based on Fedora 30 - which is not supported anymore by QEMU
since years. Seems like nobody is using (and refreshing) this, and it's
easier to test this via a container anyway, so let's remove this now.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220822175317.190551-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220914155950.804707-18-alex.bennee@linaro.org>