tests: Remove readahead and timeout from ssh tests

These values are currently unsupported for ssh disks, and in fact aren't
even parsed for ssh disks. So while this didn't result in any test
errors, we can remove them from the test input files.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>

tests/qemuxmlconfdata/disk-network-ssh-key.xml

@@ -17,8 +17,6 @@
       <driver name='qemu' type='raw'/>
       <source protocol='ssh' name='test1.img'>
         <host name='example.org' port='2222'/>
-        <timeout seconds='1234'/>
-        <readahead size='1024'/>
         <identity username='myuser' agentsock='/path/to/agent/socket'/>
         <knownHosts path="/path/to/ssh_known_hosts1"/>
       </source>
@@ -28,8 +26,6 @@
       <driver name='qemu' type='raw'/>
       <source protocol='ssh' name='test2.img'>
         <host name='example.org' port='2222'/>
-        <timeout seconds='1234'/>
-        <readahead size='1024'/>
         <identity username='myuser2' keyfile='/path/to/id_rsa'/>
         <knownHosts path="/path/to/ssh_known_hosts2"/>
       </source>

tests/qemuxmlconfdata/disk-network-ssh-password.xml

@@ -17,8 +17,6 @@
       <driver name='qemu' type='raw'/>
       <source protocol='ssh' name='test2.img'>
         <host name='example.org' port='2222'/>
-        <timeout seconds='1234'/>
-        <readahead size='1024'/>
         <auth username='testuser'>
           <secret type='iscsi' usage='mycluster_myname'/>
         </auth>

tests/qemuxmlconfdata/disk-network-ssh.xml

@@ -17,8 +17,6 @@
       <driver name='qemu' type='raw'/>
       <source protocol='ssh' name='test.img'>
         <host name='example.org' port='2222'/>
-        <timeout seconds='1234'/>
-        <readahead size='1024'/>
         <knownHosts path="/path/to/ssh_known_hosts"/>
       </source>
       <target dev='vda' bus='virtio'/>