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

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I058bfc6def176b90aa1df09ed738d450f94a38dc
diff --git a/log_manager.cpp b/log_manager.cpp
index 1acd746..cbfe434 100644
--- a/log_manager.cpp
+++ b/log_manager.cpp
@@ -298,7 +298,7 @@
     using Interface = std::string;
     using Property = std::string;
     using Value = std::string;
-    using Properties = std::map<Property, sdbusplus::message::variant<Value>>;
+    using Properties = std::map<Property, std::variant<Value>>;
 
     Interface interface;
     Properties properties;