[gnome-builder/wip/gtk4-port] plugins/project-tree: remove unused include

[Christian Hergert <chergert src gnome org>]

commit 7d87491f9e97b3dcf53f846258a71c780f1cb390
Author: Christian Hergert <chergert redhat com>
Date:   Thu Mar 31 02:02:02 2022 -0700

    plugins/project-tree: remove unused include

 src/plugins/project-tree/gbp-project-tree-frame-addin.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/plugins/project-tree/gbp-project-tree-frame-addin.c 
b/src/plugins/project-tree/gbp-project-tree-frame-addin.c
index 70e7485ca..0a6532ab1 100644
--- a/src/plugins/project-tree/gbp-project-tree-frame-addin.c
+++ b/src/plugins/project-tree/gbp-project-tree-frame-addin.c
@@ -23,7 +23,6 @@
 #include "config.h"
 
 #include <libide-gui.h>
-#include <libide-editor.h>
 
 #include "gbp-project-tree-frame-addin.h"
 #include "gbp-project-tree-workspace-addin.h"