sdbusplus: replace message::variant with std::variant

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: If43cbfdc7ec748b510cdb4af41a0f096689eaa9b
diff --git a/item_updater.cpp b/item_updater.cpp
index 9e5b173..52b60b1 100644
--- a/item_updater.cpp
+++ b/item_updater.cpp
@@ -42,12 +42,11 @@
     using SVersion = server::Version;
     using VersionPurpose = SVersion::VersionPurpose;
     using VersionClass = phosphor::software::manager::Version;
-    namespace mesg = sdbusplus::message;
 
-    mesg::object_path objPath;
+    sdbusplus::message::object_path objPath;
     auto purpose = VersionPurpose::Unknown;
     std::string version;
-    std::map<std::string, std::map<std::string, mesg::variant<std::string>>>
+    std::map<std::string, std::map<std::string, std::variant<std::string>>>
         interfaces;
     msg.read(objPath, interfaces);
     std::string path(std::move(objPath));