writefrudata: removed un-needed sd_bus_ref

sdbusplus's bus object has a change in semantics that no longer
require a 'sd_bus_ref' call.  See changes for openbmc/openbmc#1432.

Change-Id: I853b9d88aa5711d29be3edce5d4ad67bfd27b3d1
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/writefrudata.cpp b/writefrudata.cpp
index 80d5602..27ea6e2 100644
--- a/writefrudata.cpp
+++ b/writefrudata.cpp
@@ -319,7 +319,7 @@
 
     // Here we are just printing the object,interface and the properties.
     // which needs to be called with the new inventory manager implementation.
-    sdbusplus::bus::bus bus{sd_bus_ref(bus_sd)};
+    sdbusplus::bus::bus bus{bus_sd};
     using namespace std::string_literals;
     static const auto intf = "xyz.openbmc_project.Inventory.Manager"s;
     static const auto path = "/xyz/openbmc_project/inventory"s;