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/test/dbushelper_mock.hpp b/test/dbushelper_mock.hpp
index 44b3bea..0d4221d 100644
--- a/test/dbushelper_mock.hpp
+++ b/test/dbushelper_mock.hpp
@@ -17,7 +17,7 @@
     MOCK_METHOD2(getService,
                  std::string(const std::string&, const std::string&));
     MOCK_METHOD3(getProperties, void(const std::string&, const std::string&,
-                                     struct SensorProperties*));
+                                     SensorProperties*));
 
     MOCK_METHOD2(thresholdsAsserted,
                  bool(const std::string& service, const std::string& path));