[vala: 2/2] vala: Remove unused Interface.prepend_prerequisite()

[Rico Tzschichholz <ricotz src gnome org>]

commit 3bac2785dcd81527ea76fb8cfe6817327768cbdc
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Thu May 17 19:15:52 2018 +0200

    vala: Remove unused Interface.prepend_prerequisite()

 vala/valainterface.vala |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)
---
diff --git a/vala/valainterface.vala b/vala/valainterface.vala
index adb41ae..39242d3 100644
--- a/vala/valainterface.vala
+++ b/vala/valainterface.vala
@@ -53,16 +53,6 @@ public class Vala.Interface : ObjectTypeSymbol {
        }
 
        /**
-        * Prepends the specified interface or class to the list of
-        * prerequisites of this interface.
-        *
-        * @param type an interface or class reference
-        */
-       public void prepend_prerequisite (DataType type) {
-               prerequisites.insert (0, type);
-       }
-
-       /**
         * Returns a copy of the base type list.
         *
         * @return list of base types