Drop nova-rpc-zmq-receiver man-page

Doesn't make sense to install and build docs after it was removed.

Change-Id: Ia6193808cca625e83cb3497b5033db5c08dcdd1e
libvirt: pause mode is not supported by all drivers

Only KVM/Qemu drivers support the VIR_DOMAIN_START_PAUSED flag
Booting guests on other drivers with the above flag will make it fail.

Closes-Bug: 1301453
Change-Id: Ia98e018b686c4ec3c15fd1f6bcc78188f330fcef
Merge "Drop nova-rpc-zmq-receiver man-page"