Remove mariadb link from mirrors

In I30bd6b658d87abc765b5caee5003e387981850b4 I missed that this one
symlink should be removed by puppet as it is on all mirror hosts.  We
can then remove this after puppet has run.

Change-Id: I37f52b0ed012ad680eb86f8905764a1c78212148

modules/openstack_project/manifests/mirror.pp

@@ -265,6 +265,12 @@ class openstack_project::mirror (
     require  => File["${www_root}"],
   }
 
+
+  # TODO(ianw): remove after cleared out
+  file { "${www_root}/ubuntu-mariadb":
+    ensure => absent,
+  }
+
   #####################################################
   # Build VHost
   include ::httpd