xenapiConnectGetCapabilities: Remove unused 'cleanup' label

In the lastest rework (9e7ecabf) a cleanup label was left over which
results in compilation error.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>

src/xenapi/xenapi_driver.c

@@ -447,7 +447,7 @@ xenapiConnectGetCapabilities(virConnectPtr conn)
     virCapsPtr caps = ((struct _xenapiPrivate *)(conn->privateData))->caps;
     if (caps)
         return virCapabilitiesFormatXML(caps);
- cleanup:
+
     xenapiSessionErrorHandler(conn, VIR_ERR_INTERNAL_ERROR,
                               _("Capabilities not available"));
     return NULL;