[gtk+/wip/baedert/gl] gl driver: Remove dead warning code

[Timm Bäder <baedert src gnome org>]

commit 9c8154ae4f23a6dc02363ebfff40622fed7904a9
Author: Timm Bäder <mail baedert org>
Date:   Thu Dec 28 21:29:50 2017 +0100

    gl driver: Remove dead warning code
    
    _get_fbo never returns NULL.

 gsk/gl/gskgldriver.c |    9 ++-------
 1 files changed, 2 insertions(+), 7 deletions(-)
---
diff --git a/gsk/gl/gskgldriver.c b/gsk/gl/gskgldriver.c
index 3ac22e3..ba6552b 100644
--- a/gsk/gl/gskgldriver.c
+++ b/gsk/gl/gskgldriver.c
@@ -320,7 +320,7 @@ gsk_gl_driver_get_texture (GskGLDriver *driver,
   return NULL;
 }
 
-static Fbo *
+static const Fbo *
 gsk_gl_driver_get_fbo (GskGLDriver *driver,
                        int          texture_id)
 {
@@ -587,7 +587,7 @@ gsk_gl_driver_bind_render_target (GskGLDriver *driver,
                                   int          texture_id)
 {
   int status;
-  Fbo *f;
+  const Fbo *f;
 
   g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), FALSE);
   g_return_val_if_fail (driver->in_frame, FALSE);
@@ -600,11 +600,6 @@ gsk_gl_driver_bind_render_target (GskGLDriver *driver,
     }
 
   f = gsk_gl_driver_get_fbo (driver, texture_id);
-  if (f == NULL)
-    {
-      g_critical ("No render target associated to texture %d found.", texture_id);
-      return FALSE;
-    }
 
   if (f != driver->bound_fbo)
     {