[gnome-builder] buffer: remove unused variable

[Christian Hergert <chergert src gnome org>]

commit ebb7817325c1b355858f648e7a06ba21d1e5a646
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jan 3 02:08:15 2018 -0800

    buffer: remove unused variable

 src/libide/buffers/ide-buffer.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/libide/buffers/ide-buffer.c b/src/libide/buffers/ide-buffer.c
index ddd3aa2..efeff15 100644
--- a/src/libide/buffers/ide-buffer.c
+++ b/src/libide/buffers/ide-buffer.c
@@ -2696,7 +2696,6 @@ ide_buffer_get_symbol_at_location_async (IdeBuffer           *self,
 {
   IdeBufferPrivate *priv = ide_buffer_get_instance_private (self);
   g_autoptr(IdeSourceLocation) srcloc = NULL;
-  g_autoptr(GPtrArray) extensions = NULL;
   g_autoptr(GTask) task = NULL;
   IdeExtensionSetAdapter *adapter;
   IdeSymbolResolver *resolver;