[vala/0.50] vala: Rely on DataType.to_qualified_string() implementation for error-types

[Rico Tzschichholz <ricotz src gnome org>]

commit 3d3fcaa6566e978e38dcb787af1455e857e874ee
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Jul 17 08:35:06 2021 +0200

    vala: Rely on DataType.to_qualified_string() implementation for error-types
    
    DataType.type_symbol is properly initialized and can be used.
    
    Fixes https://gitlab.gnome.org/GNOME/vala/issues/1206

 vala/valaerrortype.vala | 16 ----------------
 1 file changed, 16 deletions(-)
---
diff --git a/vala/valaerrortype.vala b/vala/valaerrortype.vala
index e0b59c5d7..9ca65ec61 100644
--- a/vala/valaerrortype.vala
+++ b/vala/valaerrortype.vala
@@ -79,22 +79,6 @@ public class Vala.ErrorType : ReferenceType {
                return et.error_code == error_code;
        }
 
-       public override string to_qualified_string (Scope? scope) {
-               string result;
-
-               if (error_domain == null) {
-                       result = "GLib.Error";
-               } else {
-                       result = error_domain.get_full_name ();
-               }
-
-               if (nullable) {
-                       result += "?";
-               }
-
-               return result;
-       }
-
        public override DataType copy () {
                var result = new ErrorType (error_domain, error_code, source_reference);
                result.value_owned = value_owned;