drop struct keyword for non-packed objects

As a style decision, struct is often used with packed structures to
indicate they are used like C-structs.  Cleanup this codebase to not use
the extra struct keyword throughout.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I2f83bb1989e4d1f2f843ba3e45fb82e04f0fa61c
diff --git a/dbus/dbuspassive.hpp b/dbus/dbuspassive.hpp
index 3b091dd..9065a29 100644
--- a/dbus/dbuspassive.hpp
+++ b/dbus/dbuspassive.hpp
@@ -49,7 +49,7 @@
     DbusPassive(sdbusplus::bus::bus& bus, const std::string& type,
                 const std::string& id,
                 std::unique_ptr<DbusHelperInterface> helper,
-                const struct SensorProperties& settings, bool failed,
+                const SensorProperties& settings, bool failed,
                 const std::string& path,
                 const std::shared_ptr<DbusPassiveRedundancy>& redundancy);