Revert "vhost-user: add support reconnect for vhost-user ports"

This reverts commit edaf4ebe95.

This uses "reconnect" as attribute for <source> element, but we already
have a <reconnect> element for <source> element for chardev devices.

Since this is the same feature for different device it should be
presented in XML the same way.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>

docs/formatdomain.html.in

@@ -5673,7 +5673,7 @@ qemu-kvm -net nic,model=? /dev/null
   </interface>
   <interface type='vhostuser'>
     <mac address='52:54:00:3b:83:1b'/>
-    <source type='unix' path='/tmp/vhost2.sock' mode='client' reconnect='10'/>
+    <source type='unix' path='/tmp/vhost2.sock' mode='client'/>
     <model type='virtio'/>
     <driver queues='5'/>
   </interface>
@@ -5689,9 +5689,6 @@ qemu-kvm -net nic,model=? /dev/null
       are supported.
       vhost-user requires the virtio model type, thus the
       <code>&lt;model&gt;</code> element is mandatory.
-      <span class="since">Since 3.7.0</span> the element has an optional
-      attribute <code>reconnect</code> which configures reconnect timeout
-      (in seconds) if the connection is lost.
     </p>
 
     <h5><a id="elementNwfilter">Traffic filtering with NWFilter</a></h5>