[gtksourceview] completioncontext: remove unused prototype

[Christian Hergert <chergert src gnome org>]

commit ae76b536c0504b9ef6db5a901bb3f1673c876933
Author: Christian Hergert <chergert redhat com>
Date:   Thu Oct 28 20:43:25 2021 -0700

    completioncontext: remove unused prototype
    
    This shouldn't have ended up in the header, it was replaced with
    gtk_source_completion_context_get_bounds().
    
    Fixes #228

 docs/reference/gtksourceview-5.0-sections.txt | 1 -
 gtksourceview/gtksourcecompletioncontext.h    | 3 ---
 2 files changed, 4 deletions(-)
---
diff --git a/docs/reference/gtksourceview-5.0-sections.txt b/docs/reference/gtksourceview-5.0-sections.txt
index 3295ac38..4bbe4160 100644
--- a/docs/reference/gtksourceview-5.0-sections.txt
+++ b/docs/reference/gtksourceview-5.0-sections.txt
@@ -118,7 +118,6 @@ gtk_source_completion_context_get_busy
 gtk_source_completion_context_get_completion
 gtk_source_completion_context_get_empty
 gtk_source_completion_context_get_language
-gtk_source_completion_context_get_start_iter
 gtk_source_completion_context_get_view
 gtk_source_completion_context_get_word
 gtk_source_completion_context_set_proposals_for_provider
diff --git a/gtksourceview/gtksourcecompletioncontext.h b/gtksourceview/gtksourcecompletioncontext.h
index 17025749..9f647f1b 100644
--- a/gtksourceview/gtksourcecompletioncontext.h
+++ b/gtksourceview/gtksourcecompletioncontext.h
@@ -48,9 +48,6 @@ gboolean                       gtk_source_completion_context_get_bounds
                                                                                          GtkTextIter         
        *begin,
                                                                                          GtkTextIter         
        *end);
 GTK_SOURCE_AVAILABLE_IN_5_0
-void                           gtk_source_completion_context_get_start_iter             
(GtkSourceCompletionContext  *self,
-                                                                                         GtkTextIter         
        *iter);
-GTK_SOURCE_AVAILABLE_IN_5_0
 gboolean                       gtk_source_completion_context_get_empty                  
(GtkSourceCompletionContext  *self);
 GTK_SOURCE_AVAILABLE_IN_5_0
 char                          *gtk_source_completion_context_get_word                   
(GtkSourceCompletionContext  *self);