softmmu: remove obsolete comment about libvirt timeouts

For a long time now, libvirt has pre-created the monitor connection
socket and passed the pre-opened FD into QEMU during startup. Thus
libvirt does not have any timeouts waiting for the monitor socket
to appear, it is immediately connected.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

system/vl.c

@@ -1914,7 +1914,6 @@ static bool object_create_early(const char *type)
      * Allocation of large amounts of memory may delay
      * chardev initialization for too long, and trigger timeouts
      * on software that waits for a monitor socket to be created
-     * (e.g. libvirt).
      */
     if (g_str_has_prefix(type, "memory-backend-")) {
         return false;