[gtk+] Don't put gdk types into a gsk header

[Matthias Clasen <matthiasc src gnome org>]

commit 66a3b07183910ba1840e83b6ba6ba16e44eb159d
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Feb 5 07:49:44 2018 +0100

    Don't put gdk types into a gsk header
    
    This is a leftover from when GskTexture was moved
    to gdk.

 gsk/gsktypes.h |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/gsk/gsktypes.h b/gsk/gsktypes.h
index a5e5ecc..eae1591 100644
--- a/gsk/gsktypes.h
+++ b/gsk/gsktypes.h
@@ -27,6 +27,5 @@
 #include <gsk/gskenums.h>
 
 typedef struct _GskRenderer             GskRenderer;
-typedef struct _GdkTexture              GdkTexture;
 
 #endif /* __GSK_TYPES_H__ */