sdbusplus: remove deprecated variant_ns

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I62deb24e0fc9784289124cc0fc8a6db2de5d6b98
diff --git a/msl_verify.cpp b/msl_verify.cpp
index b49b079..0de9da3 100644
--- a/msl_verify.cpp
+++ b/msl_verify.cpp
@@ -15,7 +15,6 @@
 {
 
 namespace fs = std::experimental::filesystem;
-namespace variant_ns = sdbusplus::message::variant_ns;
 using namespace phosphor::logging;
 using AssociationList =
     std::vector<std::tuple<std::string, std::string, std::string>>;
@@ -101,7 +100,7 @@
         return {};
     }
 
-    auto& assocs = variant_ns::get<AssociationList>(associations);
+    auto& assocs = std::get<AssociationList>(associations);
     if (assocs.empty())
     {
         return {};
@@ -121,7 +120,7 @@
             try
             {
                 response.read(functionalVersion);
-                return variant_ns::get<std::string>(functionalVersion);
+                return std::get<std::string>(functionalVersion);
             }
             catch (const sdbusplus::exception::SdBusError& e)
             {