More garbage

Change-Id: I6e3f98b932f020bc7b1e8e9ba28503dd60d3fb9d
Elide utl::ConfigItem_Impl

...and utl::ConfigItem::IsValidConfigMgr is always true.

Change-Id: I37e295729c3d0ae12719f0ae6f5a5628c58d0b9f