vz: remove check for auto file format for disks

VIR_STORAGE_FILE_AUTO can not be set from xml description.
At the same time we don't set disks format to this value
as for example qemu does. Thus this we can never get this
value in format.
Signed-off-by: NNikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>

src/vz/vz_utils.c

@@ -414,8 +414,7 @@ vzCheckUnsupportedDisks(virDomainDefPtr def, vzCapabilitiesPtr vzCaps)
         } else {
             if (disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
                 supported = diskFormat == VIR_STORAGE_FILE_RAW ||
-                            diskFormat == VIR_STORAGE_FILE_NONE ||
-                            diskFormat == VIR_STORAGE_FILE_AUTO;
+                            diskFormat == VIR_STORAGE_FILE_NONE;
             }
         }