manager: remove unused interface

The manager doesn't use the interface being passed in, so remove it.

Change-Id: I1ebb07a7fa109d41a0a06772c5229b896f4352f3
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/app.cpp b/app.cpp
index b4d7765..8d7fba3 100644
--- a/app.cpp
+++ b/app.cpp
@@ -28,7 +28,7 @@
     try
     {
         phosphor::inventory::manager::Manager manager(
-            sdbusplus::bus::new_system(), BUSNAME, INVENTORY_ROOT, IFACE);
+            sdbusplus::bus::new_system(), BUSNAME, INVENTORY_ROOT);
         manager.run();
         exit(EXIT_SUCCESS);
     }