Fix build due to previous LXC patch

Mark virDomainLxcEnterNamespace as skipped in python binding
and remove reference to lxcDomainOpenNamespace which doesn't
arrive until a later patch

python/generator.py

@@ -530,6 +530,7 @@ skip_function = (
 )
 
 lxc_skip_function = (
+  "virDomainLxcEnterNamespace",
 )
 qemu_skip_function = (
     #"virDomainQemuAttach",

src/lxc/lxc_driver.c

@@ -4544,7 +4544,6 @@ static virDriver lxcDriver = {
     .domainShutdown = lxcDomainShutdown, /* 1.0.1 */
     .domainShutdownFlags = lxcDomainShutdownFlags, /* 1.0.1 */
     .domainReboot = lxcDomainReboot, /* 1.0.1 */
-    .domainLxcOpenNamespace = lxcDomainOpenNamespace, /* 1.0.2 */
 };
 
 static virStateDriver lxcStateDriver = {