monitor: Simplify password input mode (Jan Kiszka)

Drop the hack to query passwords on all monitor terminals now that they
are requested when the user initially enters 'continue'.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6708 c046a42c-6fe2-441c-8c8c-71466251a162
