Remove virsh prealloc patch

A similar patch to fix the same problem was merged upstream in the
tripleo-incubator repository.

Change-Id: I9c14c74001ca6cc865da18769ac08153bd5b0602

patches/tripleo-incubator-0001-no-virsh-prealloc-metadata.patch

@@ -1,24 +0,0 @@
-From 02818225efe2574f2e185ab7c023f2a10e755805 Mon Sep 17 00:00:00 2001
-From: Derek Higgins <derekh@redhat.com>
-Date: Wed, 3 Jul 2013 12:56:22 +0100
-Subject: [PATCH] No --prealloc-metadata on fedora's virsh
-
----
- scripts/create-nodes | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/scripts/create-nodes b/scripts/create-nodes
-index cb3d94c..0bedb5b 100755
---- a/scripts/create-nodes
-+++ b/scripts/create-nodes
-@@ -13,6 +13,6 @@ count=0
- 
- for (( count=0; count<TOTAL; ++count )) ; do
-   # TODO: make this idempotent / at least not error when run more than once.
--  virsh vol-create-as default baremetal-$count.qcow2 ${DISK}G --format qcow2 --prealloc-metadata
-+  virsh vol-create-as default baremetal-$count.qcow2 ${DISK}G --format qcow2 #--prealloc-metadata
-   configure-vm --bootdev network --name baremetal_$count --image /var/lib/libvirt/images/baremetal-$count.qcow2 --arch $ARCH --cpus $CPU --memory $MEM
- done
--- 
-1.8.1.4
-