Dont use clipboard_init yet

For now we initialize gtk in tray_init().
Should maybe use a general function and check in tray_init and
clipboard_init whether gtk was already initialized.

src/tools/clipboard.c

@@ -41,9 +41,13 @@
 
 #include "log.h"
 
+/*
+For now we rely on tray_init(void)
+
 void clipboard_init(int argc, char **argv) {
     gtk_init(&argc, &argv);
 }
+*/
 
 char *clipboard_get(void) {
     gchar *clip;

src/tools/clipboard.h

@@ -36,7 +36,6 @@
 #define UI_CLIPBOARD_H
 
 #ifdef HAVE_GTK
-void clipboard_init(int argc, char **argv);
 char *clipboard_get(void);
 #endif