[gnome-builder] vala: fix compilation error

[Christian Hergert <chergert src gnome org>]

commit c31112561f10d227b55c56aac39f005cca9d9e5d
Author: Christian Hergert <chergert redhat com>
Date:   Wed Mar 1 15:20:48 2017 -0800

    vala: fix compilation error
    
    Let's try this again and see if we can get things compiling.

 plugins/vala-pack/ide-vala-pipeline-addin.vala |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/plugins/vala-pack/ide-vala-pipeline-addin.vala b/plugins/vala-pack/ide-vala-pipeline-addin.vala
index 6fdce3a..3626ca6 100644
--- a/plugins/vala-pack/ide-vala-pipeline-addin.vala
+++ b/plugins/vala-pack/ide-vala-pipeline-addin.vala
@@ -23,7 +23,7 @@ using Vala;
 
 namespace Ide
 {
-       public class ValaPipelineAddin: GLib.Object, Ide.BuildPipelineAddin
+       public class ValaPipelineAddin: Ide.Object, Ide.BuildPipelineAddin
        {
                // main.vala:24.30-24.30: error: initializer list used for `Gtk.WindowType', which is neither 
array nor struct
                const string ERROR_FORMAT_REGEX =
@@ -34,8 +34,6 @@ namespace Ide
 
                uint error_format = 0;
 
-               public Ide.Context context { owned get; construct; }
-
                public void load (Ide.BuildPipeline pipeline)
                {
                        this.error_format = pipeline.add_error_format (ERROR_FORMAT_REGEX,