[gtksourceview] vapi: remove unused CompletionProposal metadata

[Christian Hergert <chergert src gnome org>]

commit f31adf4a46bec67e15227283fe3d8a38e1884793
Author: Christian Hergert <chergert redhat com>
Date:   Mon Nov 29 08:11:57 2021 -0800

    vapi: remove unused CompletionProposal metadata
    
    This all actually needs to be redone, if anyone from Vala would like to
    improve this (or remove it in favor of gir).

 gtksourceview/GtkSource.metadata.in | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/gtksourceview/GtkSource.metadata.in b/gtksourceview/GtkSource.metadata.in
index 3b8f9f05..973d78fd 100644
--- a/gtksourceview/GtkSource.metadata.in
+++ b/gtksourceview/GtkSource.metadata.in
@@ -4,8 +4,5 @@ GtkSource name="Gtk" cprefix="Gtk" lower_case_cprefix="gtk_"
 CompletionProvider
         .*#virtual_method virtual
 CompletionProposal
-        .equal#virtual_method virtual
-        .get_icon#virtual_method virtual
-        .hash#virtual_method virtual
 SearchContext
         .regex_error type="GLib.Error?"