Style: Remove inconsistently used @author docstrings

Each file in Godot has had multiple contributors who co-authored it over the
years, and the information of who was the original person to create that file
is not very relevant, especially when used so inconsistently.

`git blame` is a much better way to know who initially authored or later
modified a given chunk of code, and most IDEs now have good integration to
show this information.

servers/camera_server.h

@@ -38,8 +38,6 @@
 #include "core/variant/variant.h"
 
 /**
-	@author Bastiaan Olij <mux213@gmail.com>
-
 	The camera server is a singleton object that gives access to the various
 	camera feeds that can be used as the background for our environment.
 **/
@@ -113,4 +111,4 @@ public:
 
 VARIANT_ENUM_CAST(CameraServer::FeedImage);
 
-#endif /* CAMERA_SERVER_H */
+#endif // CAMERA_SERVER_H