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

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I46bdb828379d72e16a95fe1bc3cb578bfdfce80c
diff --git a/occ_status.cpp b/occ_status.cpp
index 407b0ce..6b19b76 100644
--- a/occ_status.cpp
+++ b/occ_status.cpp
@@ -106,8 +106,7 @@
     method.append(convertForMessage(Control::Host::Command::OCCReset).c_str());
 
     // OCC Sensor ID for callout reasons
-    method.append(sdbusplus::message::variant<uint8_t>(
-        std::get<0>(sensorMap.at(instance))));
+    method.append(std::variant<uint8_t>(std::get<0>(sensorMap.at(instance))));
     bus.call_noreply(method);
     return;
 }