Remove unnecessary include.

git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@1797 ea778897-0a13-0410-b9d1-a72fbfd435f5

src/geanyobject.c

@@ -28,7 +28,6 @@
 
 #include "geany.h"
 #include "geanyobject.h"
-#include "plugindata.h"
 
 GObject	*geany_object;