Remove variant_ref

It might cause a memory leak.

Issue: tiliado/nuvolaplayer#467

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>

src/glib/RpcRouter.vala

@@ -267,7 +267,6 @@ public class RpcRouter: GLib.Object {
 			token = {};
 		}
 		if (notification) {
-			variant_ref(parameters);  // FIXME: Why is this necessary?
 			string? detail = null;
 			Variant data = null;
 			RpcNotification.get_detail_and_params(parameters, out detail, out data);

src/glib/Variant.vala

@@ -462,34 +462,6 @@ private void variant_dict_add_param(VariantBuilder dict_builder, string key, str
 	dict_builder.add("{smv}", param_key, param_value);
 }
 
-[CCode (cname="g_variant_ref")]
-private extern Variant* g_variant_ref(Variant* variant);
-
-[CCode (cname="g_variant_unref")]
-private extern void g_variant_unref(Variant* variant);
-
-/**
- * Increase Variant reference if it is not null.
- * 
- * @param variant    Variant value to increase the reference of.
- */
-public void variant_ref(Variant? variant)
-{
-	if (variant != null)
-		g_variant_ref(variant);
-}
-
-/**
- * Decrease Variant reference if it is not null.
- * 
- * @param variant    Variant value to decrease the reference of.
- */
-public void variant_unref(Variant? variant)
-{
-	if (variant != null)
-		g_variant_unref(variant);
-}
-
 /**
  * Print variant as string
  *