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

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ic7440c349fc69df0c74c9ecf6c2a3759aeca3e7d
diff --git a/snmp_notification.hpp b/snmp_notification.hpp
index 07a8518..5102fc6 100644
--- a/snmp_notification.hpp
+++ b/snmp_notification.hpp
@@ -48,8 +48,7 @@
 using OID_LEN = size_t;
 using Type = u_char;
 
-using Value =
-    sdbusplus::message::variant<uint32_t, uint64_t, int32_t, std::string>;
+using Value = std::variant<uint32_t, uint64_t, int32_t, std::string>;
 // Generic snmp trap ID
 oid SNMPTrapOID[] = {1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0};