[cogl] Remove cogl_flush_gl_state from the API

This is being removed before we release Clutter 1.0 since the implementation
wasn't complete, and so we assume no one is using this yet.  Util we have
someone with a good usecase, we can't pretend to support breaking out into
raw OpenGL.

cogl.h.in

@@ -628,7 +628,12 @@ void            cogl_push_draw_buffer         (void);
  */
 void            cogl_pop_draw_buffer          (void);
 
-/**
+/* XXX: Removed before we release Clutter 1.0 since the implementation
+ * wasn't complete, and so we assume no one is using this yet. Util we
+ * have some one with a good usecase, we can't pretend to support breaking
+ * out into raw OpenGL. */
+#if 0
+/*
  * cogl_flush_gl_state:
  * @flags: flags controlling what is flushed; currently unused, pass in 0
  *
@@ -642,6 +647,7 @@ void            cogl_pop_draw_buffer          (void);
  * Since: 1.0
  */
 void            cogl_flush_gl_state         (int      flags);
+#endif
 
 /* private */
 void            _cogl_set_indirect_context  (gboolean indirect);

common/cogl.c

@@ -654,9 +654,11 @@ cogl_disable_fog (void)
   glDisable (GL_FOG);
 }
 
+#if 0
 void
 cogl_flush_gl_state (int flags)
 {
   _cogl_current_matrix_state_flush ();
 }
+#endif