[mutter] cogl: Remove unused xlib state from CoglContext

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 573ba108d9d2a3a9469a32df1363a670f54f2e18
Author: Adam Jackson <ajax redhat com>
Date:   Tue Dec 17 10:47:58 2019 -0500

    cogl: Remove unused xlib state from CoglContext
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/977

 cogl/cogl/cogl-context-private.h | 16 ----------------
 1 file changed, 16 deletions(-)
---
diff --git a/cogl/cogl/cogl-context-private.h b/cogl/cogl/cogl-context-private.h
index b7d626bd3..3cd639aae 100644
--- a/cogl/cogl/cogl-context-private.h
+++ b/cogl/cogl/cogl-context-private.h
@@ -34,10 +34,6 @@
 #include "cogl-context.h"
 #include "cogl-flags.h"
 
-#ifdef COGL_HAS_XLIB_SUPPORT
-#include "cogl-xlib-private.h"
-#endif
-
 #include "cogl-display-private.h"
 #include "cogl-clip-stack.h"
 #include "cogl-matrix-stack.h"
@@ -273,18 +269,6 @@ struct _CoglContext
 
   CoglSamplerCache *sampler_cache;
 
-  /* FIXME: remove these when we remove the last xlib based clutter
-   * backend. they should be tracked as part of the renderer but e.g.
-   * the eglx backend doesn't yet have a corresponding Cogl winsys
-   * and so we wont have a renderer in that case. */
-#ifdef COGL_HAS_XLIB_SUPPORT
-  /* List of callback functions that will be given every Xlib event */
-  GSList *event_filters;
-  /* Current top of the XError trap state stack. The actual memory for
-     these is expected to be allocated on the stack by the caller */
-  CoglXlibTrapState *trap_state;
-#endif
-
   unsigned long winsys_features
     [COGL_FLAGS_N_LONGS_FOR_SIZE (COGL_WINSYS_FEATURE_N_FEATURES)];
   void *winsys;