This option was removed from QEMU 10.2. 'make check-system TESTS=anonip',
which does a reboot and was the reason for its introduction still passes, so
apparently it's no longer needed.
* gnu/build/marionette.scm (make-marionette)
<extra-options>: Remove reconnect=1 chardev parameter.
Change-Id: Iaa225bc6a9f58cbbca74fc394ec2005f51e8491d