libcamera: Remove void specifier for functions that take no arguments

In C++, unlike in C, a function that takes no argument doesn't need to
specify void in the arguments list. Drop the unnecessary specifiers.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

src/gstreamer/gstlibcamerapad.cpp

@@ -84,7 +84,7 @@ gst_libcamera_pad_init(GstLibcameraPad *self)
 }
 
 static GType
-gst_libcamera_stream_role_get_type(void)
+gst_libcamera_stream_role_get_type()
 {
 	static GType type = 0;
 	static const GEnumValue values[] = {