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/dbushelper_interface.hpp b/dbus/dbushelper_interface.hpp
index 4dbf00c..3f7d744 100644
--- a/dbus/dbushelper_interface.hpp
+++ b/dbus/dbushelper_interface.hpp
@@ -32,13 +32,13 @@
      * @param[in] bus - A bus to use for the call.
      * @param[in] service - The service providing the interface.
      * @param[in] path - The dbus path.
-     * @param[out] prop - A pointer to a properties struct to fill out.
+     * @param[out] prop - A pointer to a properties to fill out.
      *
      * @warning Throws exception on dbus failure.
      */
     virtual void getProperties(const std::string& service,
                                const std::string& path,
-                               struct SensorProperties* prop) = 0;
+                               SensorProperties* prop) = 0;
 
     /** @brief Get Critical Threshold current assert status
      *